Weasand
n. 食管, 喉\\n[医] 气管
🗣️ 情景例句
Oh yes, the May Fourth Movement. I've read about it.
哦，是的，五四运动，我听说过。
Each bird loves to hear himself sing.
鸟儿都爱听自己唱歌。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。