在关闭之前

before long───不久以后

bear off───赢得；驶离

broke off───折断；突然停止，暂停

fire off───升火，发射；熄火

score off───驳倒；打败

shore off───离岸

swore off───发誓戒除；放弃

One space tourist (whose identity is closely guarded) forgot to switch on the vacuum in the ISS toilet before off-loading. The results were disastrous, and the chamber was splattered with feces.───有个太空游客(身份严格保密)在空间站如厕时忘记打开真空吸入管，结果太可怕了，整个厕所都是喷溅的排泄物。

Please turn the television off before you go to bed.───睡觉前请关上电视。

car up with oil before you set off.───出发前给车加满油。

Please turn off the computer before off duty, turn over the chair into the desk down.───下班前要把电脑关掉，椅子尽量拉进桌子下方；

Complete daily shift duties before off duty───下班前完成自己的每天职责

The warehouse keeper should check the fire security before off duty, and should cut off all the power supply after make sure of the fire security. Then leave with the doors locked.