Pinnule
小羽片
🗣️ 情景例句
I'll wait for my father.
我要等我爸爸。
Excuse me, but may I ask a question?
对不起，我可以问个问题吗？
it would be up and down, to and for and from side to side.
呈现出上上下下、来来回回、左左右右3种性质的运动。