The motor usually operates well.这台发动机通常运转良好。Moreover, a gear pair with curvilinear - tooth traces operates without axial thrust force.除此之外, 具有曲线型齿线之齿轮在运转时亦不会产生轴向的推力.Our factory operates round the clock on three shifts.我们...
They earn their living by squatting the land and sharecropping.他们靠擅自占用土地，按种地的收益分成为生。' seems like some of our neighbors expect to be sharecropping forever, " Dad pointed out.爸爸指出: “ 这就好像我们的一些邻居期望永远和别人收益分成一样....