troublesome

This troublesome lock jams whenever the weather turns cold. ▶

每当天气变冷，这把烦人的锁就会卡住。

Unreliable public transport is particularly troublesome for workers who depend on buses to reach jobs outside city centres.

对于依赖公交车前往市中心以外地区上班的人来说，公共交通不可靠尤其令人困扰。