building
n.美 /ˈbɪldɪŋ/英 /ˈbɪldɪŋ/
建筑物；楼房
a structure with walls and a roof, such as a house or school
例句
Our classroom is in that tall building.
我们的教室就在那栋高楼里。
The red building has a big clock.
那栋红色楼顶上有个大钟。
怎么记
build（建造）+ing→正在建造的东西
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