词典释义：
释义
in a position just ahead or at the front part of someone or something else
在…前面
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the lawn in front of the house. 房前的草坪。
in a position facing someone or something
在…前方的位置
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she sat in front of the mirror. 她坐在镜前。
in the presence of
在…面前
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the teacher didn't want his authority challenged in front of the class. 那位教师不想让他的权威在全班学生面前受到挑战。
