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1.The backpack is something you can wear, which has all the sensors on the back, which can then walk through a building and detect the geometry,
walk through 走过；轻松地初排；草率地处理
We walked through Act One yesterday morning.
我们昨天上午初排了一下第一幕。
We took a long walk through the pines.
我们在松树林中穿行了很久。
2.When they are building a new construction, it will be great to have a model of the ducts and the pipes before the walls are closed up,
close up 关闭；愈合；靠近；关闭，停业
The windows of the old classroom were closed up with brick.
旧教室的窗户用砖堵起来了。
The seaside café closes up in the winter.
海滨咖啡馆冬季歇业。
