self-cancelling
/ˌselfˈkænsəlɪŋ/adjective
1
- having elements which contradict or negate one another自相矛盾的; 自动抵消的：
some of the speculation had been self-cancelling, with newspapers predicting that the government would take quite opposite courses.
报纸预测政府会采取截然相反的路线, 某些猜测自相矛盾。
2
- (of a mechanical device) designed to stop working automatically when no longer required（机械设备）自动停止的; 自停的。