New class sign; Thesis teaching; Foothold textbook; Observation accumulation; Feeling life.

新课标；作文教学；立足课本；观察积累；感受生活。

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Based on the spectral set of skew-symmetric matrix, the result that a class sign pattern matrix with zero diagonal is unique inertia was proved by using orthogonal similarity transformation.

本文基于反对称矩阵的谱集，采用正交相似变换，得到一类具有零对角的符号模式矩阵具有唯一惯量的结论。

youdao

What language class did you sign up for?

你报名参加什么语言课程？

youdao

I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.

我还没想要是用校网站,让大家在线讨论，还是用传统的,课堂讨论。

耶鲁公开课 - 新约课程节选

When you go to sign into the class you will get a copy of this.

当你们登记上这门课的时候,你们会得到一份。

麻省理工公开课 - 固态化学导论课程节选

I'll cover them of course and go over what I think the key points are, but if I don't discuss the readings in class please don't take that as a sign that the readings aren't important.

我会对其进行讲解,并且指出重点部分,如果有课上没讲到的阅读材料,不要以为这些不重要

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Later, there were vintage cars and motorcycles, a state-of-the-art home recording studio, horses, and, the ultimate sign of class ascent, organic farming.

NEWYORKER: We Are Alive

He did not bring books to class, never a sign of the textbook or a sheaf of notes, and his shambling discourses made us feel that we were becoming what he saw before him, an amorphous entity.

NEWYORKER: Midnight in Dostoevsky

This latest defensive calamity will raise further questions about boss Arsene Wenger's ongoing reluctance to sign a top class goalkeeper.

BBC: West Brom 2-2 Arsenal