查询词典 not necessary

Drinking water before going to bed is also very important, there is concern that the disadvantages of起夜, in fact, as long as the night-time to understand the danger of water shortage, there would not have this concern, and for elderly patients with hypertension, renal function as a result of recession and an increase in nocturnal, but also increase plasma concentration and platelet hyperfunction cohesion, therefore, in order to reduce the risk of thrombosis, drinking water before going to bed, and even the middle of the night almost on a daily basis, it is particularly necessary.

睡前饮水也很重要，有人担心起夜之弊，其实，只要明白夜间缺水的危险性，就不会有此顾虑了，对于老年高血压患者，由于肾功能衰退，夜尿增多，更增加血浆浓缩和血小板凝聚力的亢进，所以，为了降低血栓形成的危险性，睡前饮水，甚至夜半补水，尤为必要。

I'm not really sure if it was necessary though.

我不太知道这是必须的。

There are also many positive acts for the benefit of others, which he may rightfully be compelled to perform; such as, to give evidence in a court of justice; to bear his fair share in the common defence, or in any other joint work necessary to the interest of the society of which he enjoys the protection; and to perform certain acts of individual beneficence, such as saving a fellow-creature's life, or interposing to protect the defenceless against ill-usage, things which whenever it is obviously a man's duty to do, he may rightfully be made responsible to society for not doing.

还有许多积极性的对他人有益的行动，要强迫人们去做，也算是正当的：例如到一个法庭上去作证；又如在一场共同的自卫斗争当中，或者在为他所受其保护的整个社会利益所必需的任何联合工作当中，担负他的一分公平的任务；还有某些个别有益的行动，例如出力去拯救一个人的生命，挺身保护一个遭受虐待而无力自卫的人，等等。总之，凡显系一个人义务上当做的事而他不做时，就可要他对社会负责，这是正当的。

Secondly, a conjecture about the stability for these systems is proposed based on the sufficient and necessary condition of the isolated transfer function being positive real. When the zeros and poles of the transfer functions lie in the imaginary axis, a known conclusion is derived from the conjecture; while the zeros and poles are on the real axis, a new result is obtained and is proved in this note. Finally, according to the conjecture, an example with poles existing on the complex plane is presented, which is not only interesting but also challenging.

然后， 基于所有孤立部分传递函数都正实的充分必要条件给出了上述系统为稳定的一个猜想，当传递函数的零极点都位于虚轴上时，由这一猜想得到了一个已知的结论；当传递函数的零极点都位于实轴上时，由这一猜想得到了一个新的结论，本文证明该结论是正确的；最后，根据这一猜想，给出了传递函数极点位于复平面的一个例子，它涉及到一类系数矩阵为时变正定矩阵的振动方程的稳定性问题，值得去深入研究。

The carboxylicgroup was not the necessary group. The presence of the imidazole group wouldenhance the cleavage activity.

羧基不是必需基团，咪唑基的存在可以使丝组二肽具有较高的切割活性。

When we analyze the formation process of the EU Common Energy Policy, we should see the integration as a dialectical process rather than only concern the driving forces of integration. That is to say, it is necessary to consider not only the driving forces but also the impedient factors in the formation course of common energy policy.

我们在分析欧盟共同能源政策的形成过程时，应该将一体化看作是一个辩证的过程，而不是仅仅关注一体化发展的动力，也就是说，既要考虑共同能源政策形成的动力也要考虑到共同能源政策形成过程中的阻碍因素。

The cognition of pure object is to solve all problems of its hypothetical object thoroughly. However, the solutions to the problems are not merely depended on the pure construction. Instead, it is necessary to design the improvable solutions to control the problems related to the properties of object and its relationships with others.

对纯粹性对象的把握目的在于从根本上解决原始经验性对象所带有问题，这些问题的解决不能单纯依赖"理想性建构"的平台所提供的支持性帮助，而必须针对对象的本质属性和之间的关系设计可持续改进的控制方案。

In a pinch if it is really necessary, although it is not perfect or what one would really like.

指某事物虽然不完美或不是你最想要的，但如果必要的话，该事物还是能满足你的需要的。

Then it is that the three tests are to be applied, not simultaneously, but, if necessary, in succession.

那麼，这三个试验的适用，而不是同时，但是，如果有必要，在继承。

Therefore, it is necessary to make the quality of play come back to music education. Not only will it assist students in experiencing music, but also alter the situation in which vast majority absorb music inactively effectively.

因此，提倡游戏品格回归音乐教育是音乐教育发展的必然要求，它将帮助学生更好地体验音乐，也将有效地改变大多数人是音乐被动接受者的局面。

It seems likely that Kraft will return with a better offer.

看起来卡夫要重新考虑一个更好的出价了。

But he'd rather burn off my feelers and watch me squirm.

可他却放任那个家伙对我为所欲为！