查询词典 n't

The door ca n't be opened without both the key and the song.

表示在开门的人努力的情况下门仍然拒绝打开，是个拟人化用法。

In this research, the growth and the sporulation of the fungus on more than 30 kinds of media containing 20 kinds of carbon sources and 5 kinds of nitrogen sources as well as the powder of cotton seed respectively were observed, T...

本工作主要研究N.rileyi培养在分别含20种碳源。5种氮源和棉子粉的几十种培养基上的生长和产孢情况，以及培养基初始pH对生长和产孢的影响。

And the sufficient and necessary conditions are obtained and the uniqueness of T is discussed and an algorithm for solving the inverse problem is provided. The other kind of structure inverse eigenvalue problem is for unitary Hessenberg matrices with positive subdiagonal elements. That is, a unitary Hessenberg matrices with positive sub-diagonal elements can be constructed when its eigenvalues and the eigenvalues of H_(11) and H_(22) are known. Here H_(11) and H_(22) are rank-one modifications of k × k leading principal submatrix of H and of its × remain submatrix respectively. In the end, the uniqueness of H and an algorithm is obtained.

文中首先讨论了这三组特征值之间的交错关系，接着确定了该逆问题有解的充要条件，并论证了其解的唯一性问题，最后给出了相应的数值算法；本文第二个问题解决的是一类不可约的酉Hessenberg阵的逆特征值问题：即一个不可约的酉Hessenberg阵可以由它的特征值、它的前k阶秩一修正的顺序主子阵的特征值以及它的后n—k阶余子阵的秩一修正阵的特征值来确定，文中最后讨论了唯一性和相应的算法。

But a new study of zebrafish larvae concludes it ' s their poorly developed side fins and ineffective swim bladder that holds them back . they simply ca n ' t keep their bodies horizontal . the finding might apply to other species , researchers say

这项以斑马鱼幼仔为对象的研究显示，小鱼的游泳技巧之所以糟糕是因为它们发育尚不完善的侧鳍和鱼鳔所导致的，它们不能保持身体水平。

I did n't do my test as well as I had expected.

我考试没有预期的好。

Have you any tights that wo n't ladder?

你有不抽丝的裤袜吗？

N't help **iling when you see one tumble down the stairs.

有些人就像 Slinkies，没什么实在用处，但看他们在楼梯上倒腾来捣腾去

Do n't waste your time on a man/woman,who isn'twilling to waste their time on you.

爱你的人如果没有按你所希望的方式来爱你

Please c o u n t up all the days that he has been absent.

请把他缺席的天数加起来。

We hope you will take these points into ac c o u n t in the vote.

我们希望你们能到这点票。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。