Kalium
n. 钾\\n[医] 钾(19号元素)
🗣️ 情景例句
Thank you, sir.
多谢，先生。
Mother begins baking cookies two weeks before Christmas.
自圣诞节的两周以前，母亲就开始做小甜饼了。
It's not like her to have missed two days of classes.
缺课两天不太象她的作风。