derail

中文： 越轨、出轨、脱轨

1. To cause to come off the tracks. (transitive) · The train was destroyed when it was derailed by the collision.
2. To come off the tracks. (intransitive)
3. To deviate from the previous course or direction. (figuratively, intransitive) · The conversation derailed once James brought up politics.
4. To cause to deviate from a set course or direction. (figuratively, transitive) · The protesting students derailed the professor's lecture.

He/she/it derails · 过去式 derailed · 过去分词 derailed · -ing形式 derailing