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

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

After a long time, she told the doleful story to her friend and said she felt bemused why he would leave suddenly.

很久以后，她把这件痛心的往事讲给朋友听，仍然不明白为什么他会忽然离去。

youdao

The message could not be clearer: The number of requests by French citizens to leave France are suddenly up by 400 to 500 percent.

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Also, of course, if you leave the euro, suddenly all debts are denominated in euros, but all income is in relatively less valuable drachmas: you get an instant debt spiral.

BBC: Greece: How do you save an economy from going bust?

Most are decent and committed yet are trapped in a structure that treats them perhaps too well most of the time only to leave them dangerously exposed when external scrutiny suddenly becomes intense.

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