This elevator stops at every floor.
电梯在每层都停。
At this time, another student raised his hand, ask: teacher, may I have the floor?
这时，另一个同学举起手来，问：老师，我可以发言吗？
At this stage, many people are thrilled to see a floor again!
在这个阶段，很多人都非常兴奋看到一个再次发言！
At this time behind her, a leaching blood bag is lying on the floor.
此时她的身后，一个浸出鲜血的袋子正躺在地板上。
At this time a pair of swallows nesting in our first floor corridor.
这时有一对燕子在我们楼道一楼筑巢。
At this time a pair of swallows nesting in our first floor corridor.
这时有一对燕子在我们楼道一楼筑巢。
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