In the wet surface of the base construction, positive side and back surface can be the construction.
在潮湿基面上施工，迎水面和背水面均可施工。
Construction of hope schools is a positive matter which benefits generation after generation.
修建希望小学是覆被万代的大好事！
The adoption is positive, turn over of revolve the construction from such as.
采用正、反转的旋转结构、操作自如。
The adoption is positive, turn over of revolve the construction from such as.
采用正、反转的旋转结构、操作自如。
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