require
/rɪˈkwaɪə(r)/verb
with obj.
1- need for a particular purpose; depend on for success or survival需要, 有赖于：
three patients required operations.
有三个病人需要手术。
1.1
- cause to be necessary使需要, 使必要：
it would have required much research to produce a comprehensive list.
开列出一份全面的清单, 想必是进行了大量的调查。
1.2
- specify as compulsory规定, 要求：
the minimum car insurance required by law.
法律规定的轿车最低保险额度。
1.3
- with obj. and infinitive(of someone in authority) instruct or expect (someone) to do something（有权威者）指示（某人）做某事, 命令, 要求：
you will be required to attend for cross-examination.
你将被要求接受盘问。
1.4
require something of
regard an action, ability, or quality as due from (someone) by virtue of their position认为（某人）应做到（或拥有）：the care and diligence required of him as a trustee.
作为受托人他被要求提供的照料和关注。
1.5
- wish to have想要, 想得到：
please indicate how many tickets you require.
请说明你想要几张票。
派生词
requirement
nounrequirer
noun词源
late Middle English: from Old French requere, from Latin requirere, from re- (expressing intensive force) + quaerere 'seek'.