12.clear back / clear out 驱除
I want you to clear out all the trash from your room before she comes over. 在她来之前,你该把房间里的垃圾清扫出来.
The spectators had to be cleared back from the field because they were getting too close to the players. 这些观众被从场地轰了出来,因为他们离选手太近.