cement造句

The gym teachers lined us up against the cement walls.
体育老师让我们靠着水泥墙排好。

A puppy stepped in the fresh cement.
一只小狗踩在刚抹好的水泥面上。

The earth-moving trucks and cement mixers lay idle.
运土卡车和混凝土搅拌机闲置着。

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