Souring
v. 变酸；发酵；变质（sour的现在分词）
🗣️ 情景例句
Don't tell any one,
别告诉别人，
Following the dinner will be addresed by the candidate.
晚饭后将由候选人作演讲。
I meant to tell you yesterday, but you were not in your office.
我原想昨天告诉你的，但你没在办公室。