Souring
v. 变酸；发酵；变质（sour的现在分词）
🗣️ 情景例句
Here's my grandfather. He lives in Florida.
这是我祖父 他住在Florida。
Did you go swimming yesterday?
你昨天去游泳了吗？
But George's parrot, Henry, was still there.
但时乔治的鹦鹉亨利仍在那里。