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
But a simple solution might be
但是， 一个简单的解决办法可能是
If you can be well without health you may be happy without virtue.
如果不健康而能强强壮壮，那么无美德也可快快乐乐。
The Turners are going on a train. The conductor is coming round.
特纳一家人在火车上。列车员走过来。