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And masculinity, which is why it is common for them to say they hate children of the opposite gender.

5岁到7岁：孩子们开始认识到自己的男女特征，这就是为什么他们常说不喜欢异性孩子的原因。

However, the multi-time values before the initial time are required in solving the ordinary differential equation with linear multi-step method, the values at these time levels are still computed from the given initial value by one of above mentioned schemes.

在常微分方程的线性多步法中用到初始时次前若干时次的数值，但这些时次上的起动值仍然由初值运用方程计算得到的。这就是说，人们在预报问题中始终恪守只用一个初值的原则。在天气预报中，数值积分只用到一个起报场，即最后一个时次的观测场。

All belonged to that indigent class which begins to separate from the lowest of petty bourgeoisie in straitened circumstances, which extends from misery to misery into the lowest depths of society down to those two beings in whom all the material things of civilization end, the sewer-man who sweeps up the mud, the ragpicker who collects scraps.

com 巴黎常有的事。他们全属于那种赤贫阶级，以原就极为潦倒、继又逐步从苦难陷入苦难、一直陷到社会底层的小市民开始，并以清除污泥的阴沟工人和收集旧衣烂衫的破布贩子这两种得不到文明好处的职业告终。

In the third chapter, because there are theories about the systems without being generate and delay when they are of restricted state right endpoint, and thus based on that, the optimal control problems of the generate systems with delay with restricted state right endpoint is considered in the chapter.

第三章，由于在讨论不具有退化时滞的常微分系统的最优控制问题时候常常会涉及到右端受到限制的情形，由此推广到讨论退化时滞微分系统在右端受限的情况时候的最优控制问题，在本章里就对这样的最优控制问题进行了讨论，得出了一些重要结论。

In addition to learning, most people may not realize this is also a forum for these company's representatives to talent scout?outstanding students.

除了可以学到东西之外，许多人往往没有意识到，举办展示会的企业和机构的代表常乘此机会进行"人才搜寻"，以网罗优秀的学生。

In the first part, it was investigated the interaction between Pb2+ and La4Ti9O24 ceramic bulk. The result shows that a significant Pb2+ diffusion into La4Ti9O24 ceramic bulk and a significant crystallization of the La2/3TiO3-type phase is clearly observed in the Pb2+ diffusion layer. The reacted zone consists of the La2/3TiO3-type phase exhibits the linear dependence of the square of the thickness, x, on the heat-treated time, t, in excellent agreement with the parabolic law x2 = kt, where k is the growth rate coefficient. The kinetic study thus indicates that the Pb2+/La4Ti9O24 interaction strictly obeys the theory of the reactive diffusion. Furthermore, the experimental k values were used to determine the associated activation energy, Ea, for the formation of La2/3TiO3-type phase using the Arrhenius plot and the following least-square equation, ln =-Ea/RT + A, where T is the annealing temperature, R is the universal gas constant, and A is a constant, resulting in Ea ~ 607 ?b 60 kJ/mol.

首先， 以巨观的方式观察PbO与La4Ti9O24陶瓷体介面的反应现象；利用X-ray绕射分析以及扫描式电子显微镜来观察不同的热处理温度以及不同的持温时间所制作的样品，研究结果发现， Pb2+离子会渗入到La4Ti9O24陶瓷内，同时在Pb2+离子所渗入的区域内会产生新的La2/3TiO3-type钙钛矿斜方晶相；藉由量测不同温度与时间之样品，其因Pb2+离子渗入而产生之La2/3TiO3-type相层厚度之关系，符合反应式扩散机制中 x2 = kt 之关系式(其中 x：扩散层厚度； k：反应速率常数； t：反应时间)；进一步将不同实验条件所得到之反应速率常数值代入Arrhenius方程式ln (k =-Ea/RT + A ，其中Ea：活化能； T：绝对温度； R：气体反应常数； A：常数，可以求得Pb2+离子与La4Ti9O24陶瓷发生反应式扩散所需之活化能为607 ± 60 kJ/mol。

They have decussately arranged simple leaves often bearing elaborate stipules, and flower parts fused, in fours or fives (sometimes including one extra-large, brightly colored sepal), and 4-5 stamens that alternate with the corolla lobes.

单叶交叉轮生，常生有精巧的托叶；花部分合生在一起，4到5基数（有时包括一个特别大而鲜艳的萼片），4到5个雄蕊与花冠裂片交替分布。

Since the identification of the first gene responsible for spinocerebellar ataxia type 1 (SCA1) in 1993, an increasing number of genes and chromosomal loci have been characterized.

我们收集到一个来自中国湖南望城的常染色体显性遗传SCA家系，主要临床特点为晚发缓慢进展的小脑性共济失调，起病年龄在40-52岁，平均47.25±4.37岁，可伴有痉挛性斜颈，头部MRI表现为小脑萎缩，家系未观察到遗传早现现象。

From moors to dark brooding mountains to bottomless lochs, and from sweeping ocean beaches to ranges of blue hills profiled like a Chinese water-color, the landscape rarely failed to interest and often evoked awe.

从茫茫荒原道幽暗神秘的峰峦再到深不可测的湖泊，从广阔的海滩到连绵无尽、酷似中国水墨画的青色山丘，这些景致无不令人兴趣盎然，并常心生敬畏。

The researchers conclude that the absence of functional Tyk2 caused the defects in the multiple cytokine signals that were observed in the patient and identify human Tyk2 mutation as a unique type of primary immunodeficiency with characteristics similar to autosomal recessive HIES.

研究人员总结到，Tyk2功能缺失会导致多种细胞因子信号通路发生缺陷，就像在人类HIES患者中观察到的一样；人类Tyk2突变作为原发性免疫缺陷的一种类型，特征与常染色体隐性HIES相似。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失