没有吃过苦的人不知道什么是甜。 Space and oceans are the new world which scientists are trying to explore. 太空和海洋是科学家们努力探索的新领域。 His laughter,which was infectious,broke the silence. 他那富有感染力的笑声打破了沉寂。 第二、后置翻译法:...