Souring
v. 变酸；发酵；变质（sour的现在分词）
🗣️ 情景例句
the American Society for the Prevention of Cruelty to Animals.
美国禁止虐待动物协会。
There are more foolish buyers than foolish sellers.
愚蠢的买主多鱼愚蠢的卖主。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。