Souring
v. 变酸；发酵；变质（sour的现在分词）
🗣️ 情景例句
I don't want my tonsils out.
我不想把扁桃腺切除。
It's $30.00 one way or $55.00 round trip.
单程票价30美元，来回票价55美元。
In 1995, there was a very big race.
1995年举行了一次盛大的比赛。