letup的例句（letup在句子中的用法）

• 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。
• 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.
• He jaws with no letup. 他没完没了地讲.
• They pressed on without letup until they got to the top of the hill. 他们一鼓作气爬上山顶.