Contrapropeller
整流（螺旋）推进器, 整流螺旋桨, 同轴反转式螺旋桨
🗣️ 情景例句
She's smart and sensitive for her age.
就这样的年龄来说 ，她很聪明而且懂事。
The fox may grow grey, but never good.
狐狸活到老，永远难变好。
What's that over there?
那边的是什么呀？