a limitation or restriction 限制;约束,束缚,局限 the availability of water is the main constraint on food production. 供水是限制食品生产的主要问题。 [mass noun]remove any clips to allow the pipe to expand without constraint. 把所有夹子都取下来,以使管子能不受限制地膨胀。 ■[mass noun]stiffness of manner and inhibition in relations between people 压抑,抑制;克制;拘束 they would be able to talk without constraint. 他们可以毫无拘束地谈话。
语源
late Middle English (in the sense 'coercion'): from Old French constreinte, feminine past participle of constraindre (see constrain)