Please move inside. Don't block the door.
上车请往里走,不要站在门口。
Use large rocks or tree branches to block the door.
用大的石块或者树枝来封住门。
The lock on a computer room door does no good if people block the door open.
将计算机房门锁上并不是好办法,因为人们可以把门打开。
So, what you do is you set up a couple of displays, one where the block is stopped, the other one where you take this away with a trap door and it keeps going.
所以,你可以设计几个演示,一个是木块被挡住了,另一个是用活门把木块挪开,使得屏板继续上升
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