它们的

Based on the filtered Lie algebra of the universal enveloping algebra, the algebraic structure of projected subsystems are studied. It is proved that they have simple decompositions, and the construction of the representations is given as well as the corresponding criterion for project limit controllability.

基于泛包络代数的滤李代数结构，研究了投影子系统的代数结构，证明它们具有简单的分解形式，并给出了它们的表示的构造方法和投影极限能控性的判别定理。

In order to resolve these questions, we try to find some new protecting group which could be used in the preparation of such unstable nucleotides analogues.

对于一些寡核苷酸的类似物，由于它们在某些化学环境下的不稳定性而使它们的合成具有一定的困难，为了解决这些问题，人们一直在开发新的保护基，以消除这些副反应的影响，更方便地制备这些化合物。

As a result, it shows that one/ones is the most frequently used group of substitution proform in English nominal substitution. They can substitute not only the whole noun phrase but also the crucial word in a noun phrase, emphasizing a general reference. Mastering all these usages can help to improve the concise power of expression as well as English comprehension .

重点论述了替代词one/ones的语义特征，对比研究了替代词one和指代词it、以及替代词one/ones与另一组替代词that/those的用法区分，研究表明，one/ones是英语名词性替代中最常见的一组替代词，它们既能替代整个名次词组又能替代名词词组中心词，强调泛指意义，掌握它们的各种用法有利于培养言简意赅的英语表达能力、提高英语阅读理解力。

Both craft tumbled, lost fifty meters of altitude, and then recovered—but their leading edges scraped the ground, dissipating their weakened shields, and they spun end over end erupting into fiery pinwheels.

两架飞行器翻着斤斗，下降了五十米的高度，然后又恢复原来的姿态——但是它们的翼边擦到地面，使他们那本已变弱的护盾消失，它们翻滚着从尾端爆成炽热的旋转焰火。

For ORFans, we observed a correlation between their composition bias and their relative evolutionary age.

对於 ORFans，我们观察到它们的组成之间的相关性的偏见和它们的相对进化的时代。

This year, members of our Birdwatching Club are studying the different kinds of birds in Zhalong and the changes in their numbers.

今年我们观鸟俱乐部的正在研究扎龙地区的各种鸟类及它们的数量变化的各种鸟类及它们的数量变化。

I drop them into hearty winter stews, use them in salad dressings, and deploy them as garnishes on cheese and charcuterie platters, where their aroma adds to the pleasure of sampling different meats and cheeses.

我放了一些在冬季丰盛的炖菜中，也在沙拉的调料中加了一些。并把它们放在奶酪或浅盘的熟食上做为装饰菜，它们的香味增加了品尝各种肉食和奶酪的乐趣。

A study Shea coauthored with Amy Chan, PhD, published last year in the Journal of Alzheimer's Disease , found that mice suffering from the equivalent of normal human age-related memory loss or early Alzheimer's disease got a memory boost when they consumed a daily dose of apple juice.

去年什亚与艾米·陈共同发表在《阿尔茨海默病期刊》的一项研究发现，当老鼠遭遇与人类相同的因为年龄而产生的记忆丧失或早期阿尔茨海默病时，它们每天喝一定量的苹果汁后它们的记忆力增强了。

I have no doubt that it was a principle they fought for, as much as our ancestors, and not to avoid a three- penny tax on their tea, 7 and the results of this battle will be as important and memorable to those whom it concerns as those of the battle of Bunker Hill, at least.

勿庸置疑，它们是在为一种信念而战，这一点正像我们的祖先，他们进行斗争也并不仅仅是为了减免三便士的茶税。与它们的命运休戚相关的这场战争，对于蚁众而言，其重要性和纪念意义至少绝不亚于本卡山战役对于我们的意义。

They are linked by their subject matter with the temples dedicated to the cult of Rama, the hero of the epic Ramayana .

它们是由它们的主题联系在一起的问题与罗摩的庙宇专用的邪教，是罗摩衍那英雄的史诗。

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