souring
v. 变酸；发酵；变质（sour的现在分词）
词形变化
sourings
复数
sourings
释义与例句
n.
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1.
The process by which something is made, or becomes, sour; acidification.
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2.
The process by which fabric is soured, washing out the lime by means of acid.
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3.
Any sour apple
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4.
Vinegar.
可数 过时 不可数
v.
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1.
present participle and gerund of sour