移动社交是门大生意。
一个黑色物体在我和门之间移动着。
小心出入。最靠近电梯门的乘客应首先移动。
Enter and exit carefully. Passengers nearest the doors should move first.
快开门机构能够使门双向移动。
The fast open-door mechanism can make the door two-way movement.
快开门机构能够使门双向移动。
The fast open-door mechanism can make the door two-way movement.
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