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
Don't you feel well?
你感觉不好吗？
Did you wash this yourself?
你自己亲自洗了这个？
Congratulations! The girls did very well, too.
祝贺你们！女同学也做得很好。