在第七

In the last chapter, by introducing the isochronous center of real systems into complex planar and defining complex center and complex isochronous center, a concise linear recursion formula for period constants is given, necessary and sufficient conditions of complex isochronous center (the Time-Angle Difference Theorem) proved, conditions of real systems with linearizable center and saddle treated unitedly and the isochronous center conditions discussed fully for a class of real planar cubic systems.

在第七章，通过把实系统等时中心引入复平面研究，定义了复中心和复等时中心，给出了等时中心周期常数计算的简明的线性递推公式，证明了等时中心判定的充分必要条件，统一地处理了实系统具有可线性化的中心和鞍点条件，并对一类实平面三次系统的等时中心条件进行了完整研究。

Radtz, a right-handed relief pitcher, came into the game it the seventh inning.

后补投球手拉达兹是右手投手，在第七局时上场。

In Chapter 7, we develop an efficient algorithm for mining generalized sequential patterns.

在第七章中，我们提出了一个控掘泛化序列模式的有效算法。

They were in seventh heaven.

他们在第七个天堂方面。

Is in the seventh house...

是在第七套房子。。。

I'll get off at Seventh street.

我要在第七街下车。

This is why on the seventh day there was no statement "and there was morning and evening."

这就是为什么在第七天没有说"有早晨，有晚上"的原因。

Death is seen as the change in seasons, this can be seen in the third and seventh stanza.

一句可知，时间被看作是一颗从永恒之中长出的大树，而在第七节中，死亡则代表了四季的更迭。

And sat stone-faced while the building burned.

教士在第七天穿著一身黑

You can remove scenes of Ron playing quidditch from the fifth book, and you can remove Hermione and S.P.E.W. and those subplot s ... but with the seventh, that can't be done.""

你可以去掉第一集中罗恩打魁地奇的场景，你可以去掉赫敏的S.P.E.W——家养小精灵权益促进会，你可以去掉那些次要剧情……但在第七部里，却万万不能这样做。""

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。