steric hindrance effect

例句：

1. 1. The presence ofa steric hindrance cansignificantly affect the reaction rate.
   立体阻碍的存在可以显著影响反应速率。
2. 2. The designof the molecular structure playsa crucial role in determining thesteric hindrance effect.
   分子结构的设计与决定立体阻碍效应起着至关重要的作用。
3. 3. The steric hindranceeffect is an important factor in understanding thebehavior of molecules in solution.
   立体阻碍效应是理解分子在溶液中行为的重要因素。