Bittered
vt. 使变苦（bitter的过去式与过去分词形式）
🗣️ 情景例句
Thank you, sir.
谢谢。
I'm two years younger than my sister.
我比我姐小两岁。
How much cloth does it take to make a skirt for the girl?
女孩做一条裙子要用多少布？