Leakproofness
密闭度
🗣️ 情景例句
Do you fancy the Back Street Boys?
你喜欢“后街男孩”吗？
I'm afraid you will be discouraged.
我怕你会灰心。
The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass.
这座水晶宫不同于世界上所有的其他建筑，因为它是用钢和玻璃建成的。