定时炸弹 dìngshízhàdàn hidden danger Origin Definitions Defs Strokes Stroke Words Sentences Sents 定时 定時 dìngshí noun timed Equipped with a timer or set to go off at a certain time, as with an alarm clock or explosive device炸弹 炸彈 zhàdàn noun bomb a type of explosive weapon usually made of a metal shell filled with explosives, triggered by a fuse and dropped from aircraft or thrown