Use a kettle with an automatic cut-out so it doesn't boil for longer than necessary.

使用一个有断流器的水壶，这样水开后它会自动断电。

《柯林斯英汉双解大词典》

In the mid-1950s, I was a somewhat bored student who believed that doing any more than necessary was wasting effort.

在20世纪50年代中叶，我是一个有点无趣的学生，当时认为做任何不必要的事都是浪费精力。

youdao

I replied. 'Don't alarm him more than necessary.

我回答，“如果没有必要，就别吓唬他吧。”

youdao

But a recent study warned that more children than necessary are being exposed to radiation this way.

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"Perhaps if we had a Pax, we could refocus on what is really important: the relationship,the love, being kinder than necessary.

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"The Afghan people do not want us in Afghanistan any longer than necessary.

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Actually, psychologically healthy bosses strive to protect those they fire from feeling more pain than necessary.

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We'll always have losses, but we want them to be no larger than necessary.

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And he will be tempted to shuffle a client's portfolio rather more often than necessary.

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