astringency

Tea has a natural astringency, which is why people often add milk or sugar.

茶具有天然的涩味，所以大家经常添加牛奶或糖。

He finds the astringency of an aftershave lotion is refreshing.

他发现须后水的收敛性能提神。

The astringency of his satire is well known.

他的讽刺之尖锐是众所周知的。