hydroplane
n
1 light motor boat with a flat bottom, that can travel fast over the surface of the water 机动平底快艇.
2 device on a submarine enabling it to rise or descend (控制潜艇升降的)水平舵.
🗣️ 情景例句
Will you please take this upstairs, Susan?
麻烦你把这个带上去好吗, Susan?
The restaurant is on the second floor.
那餐厅在二楼。
I'm afraid he's out at the moment. He's at the cinema. Can I take a message?