He had to leave suddenly to answer the call of nature.

他不得不忽然离开去处理下内急。

youdao

He had to leave suddenly to answer the call of nature.

他不得不突然离开去解决下内急。

youdao

Sorry, Sir, I must answer the call of nature-i won't be long.

对不起先生，我得去方便一下，就一会儿。

youdao

And so the next thing you do is you call up a journal and say I've discovered a fundamental law of nature.

下一步你做的事是打电话给一个杂志,并宣称你发现了一条自然界的基础定律。

麻省理工公开课 - 热力学与动力学课程节选

To engage in civil disobedience of any kind is not only to call this or that rule into question but it is to call into question the very nature of law, the very question of the rules.

任何形式的公民违抗,都不仅是质疑那项单一法规,更是质疑法律的本质，质疑所有的法规。

耶鲁公开课 - 政治哲学导论课程节选

Some players concentrate with such intensity they are unable to break off playing even at the call of nature.

BBC: [an error occurred while processing this directive]

Robson will be out there on the first tee, without breaks for food, water or the call of nature, from 0630 to 1606.

BBC: Thursday's Open diary

The unglamorous setting and the last-minute nature of the call suggests the deal may not have been easy to broker, our correspondent adds.

BBC: Israel PM apologies for Gaza flotilla deaths