一连几个小时里，自发的救援人员排成长队，搬运学校废墟里的砖头和水泥块，想清理一下现场。

For hours, this AD hoc rescue team formed a line and passed along bricks or chunks of concrete in an attempt to clear debris.

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他好歹是别个请到现场的；人家请他过去，清理他们所失挚爱最后的痕迹。

He was invited to the crime scenes; people called him to come and clean the visual remains of a loved one they had lost.

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施工前，先清理现场，检查施工部位有没有水、暖、电等工种的预埋件，是否会影响板块的铺砌或铺粘；

Before the construction, it is necessary to clean the spot and check if there is Pre -embedded part of water heating electric and so on, if there is effect to lay and stick of the floor tile.

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