The surgeons have been working for twenty hous without letup.那些外科医师一连工作了二十小时没有停止。He jaws with no letup.他没完没了地讲.We must develop the advanced productive forces without letup.我们必须坚持不懈地发展先进的生产力.They pressed on without letup ...
They pressed on without letup until they got to the top of the hill.他们一鼓作气爬上山顶.He jaws with no letup.他没完没了地讲.We must develop the advanced productive forces without letup.我们必须坚持不懈地发展先进的生产力....