Seely
可怜的, 令人怜悯的
🗣️ 情景例句
Who's that?
谁呀？
My friend reads and writes several languages.
我的朋友能读并写好多种语言。
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）。