要点：1〕“更有可能〞：用likely而不用possible;2〕“增加体重〞：用put on weight或者gain weight都可以

90．What many people haven’t realized/What many people haven’t become aware of/What has not come to many people’s minds/What has not occurred to many people

要点：1〕主语从句：需要翻译的局部是一个what引导的主语从句。2〕时态：这里用现在完成时态比一般现在时态更适宜。

3〕“意识到〞：这个词有很多种翻译方法，具体见答案；特别需要注意的是用的词组不同，主语的搭配不一样，例如occur to主语为sth，而realize主语为sb。

91．closely related to the lack of exercise

要点：1〕“与…密切相关〞：relate…to…;注意这里是被动语态，助动词is已写出。

2〕“缺乏锻炼〞：the lack of exercise。这里lack是名词，定冠词the不可缺；其实也可以用lack的动名词形式：lacking exercise，但为了与主语the poor functioning of the human body对应，the lack of exercise更好。