hitch: an unexpected difficulty, obstacle, delay, etc.

A slight hitch can lead to a deadly disaster. 差之毫厘，謬以千里

without a hitch 非常順利

a technical hitch（技術(shù)故障）

a legal hitch（法律問題）

a slight/minor/major hitch周杰倫在北京順利舉辦了一場演唱會。

Jay Chou's concert was held in Peking without a hitch.

（參考翻譯：Jay Chou’s concert in Beijing went off without a hitch. 或者 Jay Chou’s concert was held in Beijing without a hitch.）