inhibition

他突然感到一阵拘谨，无法表达自己的真实感受。

He felt a sudden ___inhibition and couldn't express his true feelings.

克服社交拘谨对于有效沟通至关重要。

Overcoming social ___inhibition is crucial for effective communication.

这种抑制剂有效地阻止了有害化学反应的发生。

This ___inhibition agent effectively stops the harmful chemical reaction.