几个

He could sometimes be seen standing by the hour together in front of the sutler's window in the Charlemagne yard, staring like an idiot at the sordid list of prices which began with: garlic, 62 centimes, and ended with: cigar, 5 centimes.

人们有时看见他在查理大帝院里，一连几个钟头呆立在小卖部的窗子附近，象个白痴似的老望着那块肮脏的价目表，从最初的"大蒜，六十二生丁"起直念到最末的"雪茄，五生丁"。

He could sometimes be seen standing by the hour together in front of the sutler's window in the Charlemagne yard, staring like an idiot at the sordid list of prices which began with: garlic, 62 centimes, ended with: cigar, 5 centimes.

人们有时看见他在查理大帝院里，一连几个钟头呆立在小卖部的窗子附近，象个白痴似的老望着那块肮脏的价目表，从最初的"大蒜，六十二生丁"起直念到最末的"雪茄，五生丁"。

Presented with early artery enhancement and immediate wash out ,Two cases presented with wash in quickly and wash out slowly .The enhancement pattern of 36 liver metastatics cases was divided into the little blood provides group and the much blood provides group . The 5 cases of haemangioma were enhanced centripetally in portal phase and washed out after several minutes without arterial enhancement.

通过造影后的表现还可明确提示以下几个方面：（1）肿块内的坏死区；（2）在延迟相发现了肝内小转移灶，从而改变了临床治疗方案；（3）滋养动脉的显示；（4）门脉内栓子的鉴别诊断。36个转移性肝癌病灶分为少血供转移癌组和多血供转移癌组。6例肝血管瘤中5例均表现为向心性环行持续缓慢充填，另一例9mm的小血管瘤表现为完全、快速向心填充。

If an animal has two different names, or if one name refers to several different species, the result is confusion and chaos.

如果一种生物有两个不同的名字，或者一个名字指代几个不同的物种，就会导致紊乱。

IS CALIFORNIA'S governor, Arnold Schwarzenegger, about to terminate America's venerable system of primary elections, that months-long political charivari ⑴ that brings fleeting fame to the otherwise obscure citizens of Iowa and New Hampshire?

加州州长阿诺·史瓦辛格将要终结美国传统悠久的总统初选制度吗？这一初选制度带给爱荷华州和新罕布什尔州（分别是最早进行基层党团会议初选和个人投票初选的两个州，译者注）几个月政治上的喧嚣，为那里的平民百姓争得短暂的荣誉。

We are just going to keep chugging away.

我们几个真是和齿轮一样转个不停，忙爆了。

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

Over the next few months, my father spent many nights alone in his room. He read The Greek Way by the German-born educator and classicist Edith Hamilton. He read Aeschylus and Shakespeare in an effort to deal with the enormity of his loss and the greatness of his grief.

在接下去的几个月里，父亲独自在房间里度过了许多个夜晚，潜心阅读德国出生的教育家和古典学者伊迪丝·汉密尔顿撰写的《希腊精神》，阅读埃斯库罗斯和莎士比亚的作品。

Nowadays, the typical college professor is a part-timer, moonlighting for extra cash or prestige, or "freeway flying"—cobbling together a teaching career with several classes at different colleges.

现如今，一个典型的大学教授是兼职的，为了更多的钱或荣誉而夜里加班或者在高速公路上跑来跑去，在几个不同大学多个班级里同时教书。

In order to play the part of a faithful historian, we ought even to add that, among the curiosities displayed in the square, there was a menagerie, in which frightful clowns, clad in rags coming no one knew whence, exhibited to the peasants of Montfermeil in 1823 one of those horrible Brazilian vultures, such as our Royal Museum did not possess until 1845, which have a tricolored cockade for an eye.

还有一件事，我们 sSBbWw 应当提到，这才不失为忠实的话古者。陈列在空坪上的那些光怪陆离的东西中，有个动物陈列馆，那里有几个小丑，真不知道那些人是从什么地方来的，衣服破烂，相貌奇丑，他们在一八二三年便已拿着一头巴西产的那种吓人的秃鹫给孟费郿的乡民看，那种秃鹫的眼睛恰象一个三色帽徽①，王家博物馆直到一八四五年才弄到那样一只。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。