请问以下2个句子有什么区别? 侧重点有什么不一样?But China's satellites are important for improving the NAV system.But China's satellites are important to improve the NAV system.
Catelyn could not pretend to surprise.' Alone?You know as well as | that you will never survivethe high road.
凯特琳难掩惊讶之情。“就你一个人?你我都很清楚一个人走山路根本是找死。【问题】问题在第一句,我理解的是不能假装惊讶,意思是不...