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
Sorry, I'm afraid I'm busy tonight.
很抱歉，恐怕我今晚没空。
The teacher was not at all happy with his students.
那位老师对他的学生毫不满意。
Is that your bike?
那是你的自行车吗？