How long does it take to go one round in this fashion?
质点绕圆一周需要多久
耶鲁公开课 - 基础物理课程节选
There weren't enough men to go round, they were dead.
根本就没有足够的劳动力,都死了
耶鲁公开课 - 1871年后的法国课程节选
应用推荐
模块上移
模块下移
不移动