Armlike

He owes his success more to luck than to ability.

他认为他的成功是靠运气而不是靠自己的能力。

Do not swap horses when crossing a stream.

处在危难中，不宜大更动。

When a student recently saw two workmen using a pneumatic drill outside his university, he immediately telephoned the police and informed them that two students dressed up as workmen were tearing up the road with a pneumatic drill.

最近有个学生看见两个工人在学校门外用风钻干活，马上打电话报告警察，说有两个学生装扮成工人，正在用风钻破坏路面。