require

He will require surgery on his left knee.

他的左膝需要做手术。

"Running a family household requires high-level planning and coordinating," she says.

“运行一个家庭需要高水平的规划和协调。”她说。

Each jump required careful planning and expert timing.

每一次跳跃都需要周密的计划和专业的节奏把控。

The wearing of seat belts is required by law.

法律规定必须系安全带。

The sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times.

这项运动的规则要求竞走运动员的膝盖在大部分的腿部摆动过程中保持笔直，一只脚始终与地面保持接触。

Some schools require students to provide community service by volunteering in a nursing home, child care center or government agency.

一些学校要求学生通过在养老院、儿童看护中心或政府机构做志愿者来提供社区服务。