The instruction PULL or PARSE PULL take a string off the top of the stack.
指令PULL或者PARSE PULL从栈顶取得一个字符串。
To inflate your life vest, pull the red tabs, but do not inflate it while you are in cabin. Just before leaving the aircraft, inflate it and follow the instruction of the fight attendants.
当你离开飞机时，拉下救生衣两侧的红色充气把手，但在客舱内不要充气。
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