examples:
he runs three kilometres every morning; that's why he is so fit.
他每天早上跑三公里，这就是他形体那么健美的原因。
i got a fever last night, but i feel well today. 我昨天晚上发烧了，但今天我感觉没事了。
it is healthy to eat fruit. 吃水果对身体有好处。
you should pray for a sound mind in a sound body. 你应祈盼在健全的身体里有健全的头脑。
3 foolish, silly, fatuous
这些形容词都表示言行举止愚蠢可笑，是缺乏智慧的表现。"foolish"的强烈程度及贬低程度最轻，通常是暗指获得较低的评价或缺乏智慧及正确判断力。 "silly"暗指言行举止无意义或无目的性。"fatuous"尤其指内容贫乏，为人昏庸或自满以及那些无意义的、愚蠢的东西。
examples:
she spent all their money on foolish little knickknacks. 她把钱全花在了那些傻不拉叽的小玩意儿上了。
paul's suggestions aren't brilliant but aren't silly either. 保罗的建议虽不高明但也并不荒诞。
he seems to take pride in making fatuous remarks. 说起这番蠢话来他似乎还挺得意。