He required the worker to wear a helmet.
他要求工人佩戴安全头盔。

The solution to the problem required many hours.

解决这个问题需要好几个小时。

The machine automatically downloads the required information.

这台机器能够自动下载所需要的信息。

Harvesting grain in the 19th century required plenty of horsepower and manpower.

十九世纪时，收割谷物需要大量的畜力和人力。

VERB. 需要;有赖于. If you require something or if something is required, you need it or it is necessary.
※To preserve a friend three things are required: to honour him present, praise him absent, and assist him in his necessities. 维持友谊需要三点∶当面尊重他，背后赞扬他，需要时帮助他。

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