难得的

I swear by Apollo, the healer, Asclepius, Hygieia, and Panacea, and I take to witness all the gods, all the goddesses, to keep according to my ability and my judgment, the following Oath and agreement: To consider dear to me, as my parents, him who taught me this art; to live in common with him and, if necessary, to share my goods with him; To look upon his children as my own brothers, to teach them this art.

新站一般在Google里面很难得到好的排名，所以多数新站长为了快速达到排名，好不容易到处发帖，发链接，等啊，盼啊，盼到百度，谷歌终于收录了，开始辛勤的更新自己的网站，看到收录数不断的增加，心里高兴啊，新站长这个时候就要特别注意了，当排名在谷歌短时间内迅速上升时不应盲目乐观，因为这是不稳定的表现。

The large and medium-sized cement enterprises in our country generally use high-quality bituminous coal and low quality coal can not been used.

随着优质资源的日益稀少，水泥工业逐渐向利用低质燃料的方向发展，但局限于当前的水泥生产工艺水平，能够适应水泥生产的煤种范围比较窄，一般我国水泥工业中的大中型企业多使用优质烟煤，劣质煤很难得到应用。

It is important for the cooling rate and quality of foodstuffs in the cold store with the uniform flow and temperature field.

合理的气体流场才能保证均匀的温度场，这对冷藏库内货物的降温速率和贮藏质量起着至关重要的作用，而常规设计方法很难得到合理的气体流场。

Then I became interested in ancient figures: Qu Yuan's hopelessness, Li Bai's self-indulgence, Tao Yuan-ming's Utopia and Zheng Ban-qiao's muddleheadedness, all of which became transfiguration of truthfulness and goodness in my heart.

从此我开始对古人感兴趣了：屈原的无可奈何；李白的及时行乐；陶渊明的避世桃源；郑板桥的难得糊涂，都成了我心目中真善美的境界。

To the bad nonlinearity and coupling of the power station boiler superheated stean temperature,It is very difficult to gain excellent control with the traditional PID cascade method and the.

常规的电站锅炉汽温控制系统一般为串级PID系统，然而大型电站锅炉的动态特性有明显的分布参数特性、非线性及较强的藕合性，一般很难得到非常满意的控制结果。

I admired him, so that I superstitiously thought that I needed and would come up with such fathom for my life at the same age.

我本不应该去那个颁奖会的，因为我妈妈那几日特意出差来到北京，为的就是和我一起过生日；她那天白天要去北京化工厂买试剂，我原计划陪她一起去，她却劝我说这样的去人民大会堂参加会议的机会难得，也许会有意外的收获，。。。。。。

In this regard, music and literature seem to be much more difficult to perceive, but, with the plastic arts, you can see from the earliest to the latest achievements. We can clearly feel the venation of the plastic arts growing process as well as its value.

在这一点上音乐和文学就困难得多，而造型艺术你可以看到从最早的马斯塔巴或者最早的神殿，一直到我们最新的造型艺术成果，我们可以清晰地感到造型艺术的脉络和它成长的过程以及价值。

The biggest advantage of this mean is that don"t need to computer the perturbation matrix element by using zero level wave function, even don"t need to give out high rank amendatory result using infinite series to sum like the ordinary perturbation theory. Thus, it not only avoids many complicated integral operation, but also obtains high rank amendatory result that it is very difficult to get or cant get.

这种方法最大的优点就是不需要用零级波函数来计算微扰矩阵元，更不需要像普通微扰论那样用无穷级数求和给出高阶修正的结果，这样一来，不仅避免了许多繁复的积分运算，而且求得了普通微扰论很难得到或不可能得到的高阶修正的结果。

So it has become an urgent problem that how to grasp the chance, exerting the advantages of the areas, obtaining the developed culture and technics, and continuingly perfecting the system of professinal and techniacal education.

如何把握住西部大开发的难得机遇，充分发挥少数民族地区的资源优势，吸收先进文化和技术，促进少数民族地区的均衡发展，进一步完善少数民族地区新的职业技术教育体系已经成为迫在眉睫需要解决的问题。

Successful traders seek out market opportunities capitalizing on the reality that government's first priority is rarely achieved.

在现实中，这一**的首要任务难得真正实现。成功的交易者寻求的市场机会就是建立在这样的现实上的。

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。