Substruction
n. 基礎(chǔ), 下部結(jié)構(gòu), 下層建筑, 路基
??? 情景例句
The carpet's worn out. Let's put in new wall-to-wall carpeting.
地毯已很破舊了， 我們需要裝一套新的。
He is playing on the slide over there.
他正在那邊溜滑梯。
There's something wrong with Kate.
凱特有些舒服。