impede

impede的英语例句

1. Severe steric effects at the reactive carbon would impede the substitution.

   大的立体效应阻止在碳上的取代.

2. At no time did I make an attempt to impede any investigatory effort.

   我绝没有试图妨碍过任何调查工作。

3. One shouldn't impede other's progress.

   一个人不应该妨碍他人进步.