1PHRASAL VERB-ERG (使)返回;(使)折回 If you turn back or if someone turns you back when you are going somewhere, you change direction and go towards where you started from. (使)返回;(使)折回 [Also VERB n PREPOSITION]
She turned back towards the crossroads. [VERBPREP. prep./adv.]
她折回十字路口。
They were very nearly forced to turn back. [VERBPREP.]
他们差点被迫返回。
Police attempted to turn back protesters marching towards the offices of President Ershad. [VERBPREP. noun]
2PHRASAL VERB 无法改变计划;无法收回成命 If you cannot turn back, you cannot change your plans and decide not to do something, because the action you have already taken makes it impossible. 无法改变计划;无法收回成命
The administration has now endorsed the bill and can't turn back. [VERBPREP.]