Your talk is a little aside from the subject of our disussion.

Karl Marx's books about human nature exhausted this subject.

卡尔.马克思的有关人性的书籍对此问题阐述极为详尽.

Men are subject to sudden changes of fortune as the moon is subject to the changes of being full and crescent, cloudy and clear.

人有旦夕祸福, 月有阴晴圆缺.

I regret my ignorance on the subject.

我很遗憾,对此问题一无所知.

The subject remains untouched upon.

这个题目仍然没有触及.

He dodged our questions by changing the subject.

他改变话题以规避我们的问题.

The subject of the painting is very clear.

这幅画的主题很明显.

History is silent on [ upon , about ] the subject.

历史没有 叙述 这 件 事情.

The coverage of the subject in his botany text is inadequate.

他的植物学教科书中对那题目的叙述不充分.

What you said is irrelevant to the subject.

你说的与本题无关.

Let us cut the baloney on this subject.

关于这个问题我们就别胡扯了.

The subject may be viewed in various ways.

这问题可以从不同的方面加以考虑.

His ideas cut across mine on the subject.

在这个问题上他的想法和我的不一致.

The class separated into several smaller groups to talk about the subject.

这个班的学生分成了几个小组讨论这个问题.

The arms trade should be subject to rigorous controls.

对军火贸易应该严加限制.

As long as your interests and mine were at variance I could give you no counsel on this subject.

只要你我的利益有冲突,我就不能在这个问题上向你提出任何忠告.

We didn't get to the core of the subject.

我们没触及问题的核心.

A good teacher should be able to infect his students with his own keenness for his subject.

一个好教师应能以自己对本学科的热爱来影响学生.

He was — what is the phrase I'm looking for — not intimately acquainted with his subject.

他——我该怎么说呢——对自己的课程很不熟悉.

He launched into a new subject last year.

去年,他开始了一个新课题.

I hope the textbook will provide a foothold for students of the subject.

我希望这本教材能让本专业的学生打下基础.