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People are always talking about 'the problem of youth'.

人們總是在談論“青年問題”。

Two factors weigh heavily against the effectiveness of scientific research in industry.

兩個因素嚴重地影響工業里科學研究的效果：

to discover whether they are mentally ill more often than other people are.

看一看他們是否比其他人更易患精神病。

then at the height of his military success in the Thirty Years' War,had dictated her measurements and armament.

正處在"三十年戰爭"的軍事鼎盛階段，他親自規定了這艘船的規模和武器配備。

I have heard of writers who read nothing but their own books;

我聽說一些作家，除了自己的書外，別的書一概不讀，

But this phase of our development is now finished.

但這個發展階段已經結束。