Elementary knowledge are so simple that school teachers needn't to take trouble to update their knowledge.

基础知识都是很简单的，因此中小学的教育者没有必要专门更新知识。

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The government warned that police would take tougher measures to contain the trouble.

政府警告说警察将采取更为强硬的措施来制止这场动乱。

《柯林斯英汉双解大词典》

He did not take the trouble to see the movie before he attacked it.

他在抨击那部电影前并没有费心去看看电影。

《柯林斯英汉双解大词典》

First, I produce media campaigns designed to highlight specific actions people can take to prepare for trouble.

WHITEHOUSE: Using Media Strategies to Boost Public Preparedness

The group is said by the Israeli newspaper Haaretz to include some senior commanders and to have already stirred up trouble by attempting to take over the camp.

ECONOMIST: Fading hopes | The

Frugality: Once you establish yourself as a dividend payer, you will generally take the trouble to maintain the dividend.

FORBES: Dear Congress, When You Jump Off the Cliff, Remember to Save the Dividend