Synchropter
同步交叉式双旋翼直升机
🗣️ 情景例句
He said they need a new book of photographs,
他说他公司需要一本新的摄影集，
I have some difficulty in expressing myself.
我表达起来有点困难。
I assure you that you will feel no pain at all.
我保证你根本不会觉得疼的。