pet peeve

My biggest pet peeve is when people don't reply to messages they've already read.我最讨厌的事莫过于别人对已经读过的信息不予回复。

Loud chewing is a pet peeve for many people who work in open-plan offices.大声咀嚼食物是在开放式办公室工作的许多人的雷区（最讨厌的事）。