re‧quire S1 W1 AC / rɪkwaɪə $ -kwaɪr / 动词 [及物动词，不用于进行时]

1 to need something :

Campbell’s broken leg will probably require surgery.

What’s required is a complete reorganization of the system.

Most house plants require regular watering.

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Require is used especially in written English. In everyday English, people usually say need :

His leg will probably need surgery.

2 if you are required to do or have something, a law or rule says you must do it or have it

be required to do something

You are required by law to wear a seat belt.

require that

Regulations require that students attend at least 90% of the lectures.

The bill failed to get the required number of votes.