You would make an excuse and say the detector isn't working.

你可以找个理由,说探测器坏了。

麻省理工公开课 - 固态化学导论课程节选

He couldn't avoid that in this phase of making of his thought of that movie called Chimes at Midnight, that he couldn't go on with the excuse that his make-up kit was lost.

他不能在,为电影《午夜钟声》,练习台词时继续用,化妆箱不见了的托辞。

麻省理工公开课 - 电影哲学课程节选