Contraprop
n. 向对转螺旋桨
🗣️ 情景例句
Bye-bye.
再见。
Nothing so necessary for travellers as languages.
旅行者最需要的是几种语言。
Although an ocean wave gives the impression of a wall of water moving in your direction,
虽然，海浪给人的印象是一堵由水组成的墙向你压过来，