People usually employ a concrete thing to hint the value of time.
人们常常会用一个实际的东西来显示时间的价值。
The thing is, the floors are just concrete.
事实是，地板是混凝土做的。
When planning a concrete creation, the first thing to look at is the concrete surface.
当规划一个具体的建立，首先要考虑的是混凝土表面。
When planning a concrete creation, the first thing to look at is the concrete surface.
当规划一个具体的建立，首先要考虑的是混凝土表面。
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