Souring
v. 变酸；发酵；变质（sour的现在分词）
🗣️ 情景例句
Alright. Please sit down.
好的，请坐下。
I thought he could design the most beautiful department store, but...
我想他能设计出最漂亮的百货商场，不过……
I'm glad to hear that.
听你这么说真高兴。