Question

2. However,many scientists who specialize in aging are doubtful about it and say the human body is just not designed to last past 120 years.

[句子分析]        

[译文]        

Answer 1

2. [分析]此句的主语为many scientists ,里面包含了一个由who 引导的定语从句。主句有两个谓语，BP are doubtful和say,say后面又包含了一个宾语从句。

[译文]然而，许多专门研究人类寿命的专家对此表示怀疑并表示，人类寿命不会超过120岁。