... not care a hill of beans [美口]毫不介意[在... know beans about 知道(了解) spill the beans 泄露秘密 ...
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not know beans about something 一窍不通
to know beans about something 这种说法不存在
I don't know beans about cars.
我对汽车一窍不通。
youdao
He doesn't know beans about insurance business at all.
他对保险业务一窍不通。
I might say you don't know beans about a subject if you do not know anything at all about it.
我可以说你不知道一个主题豆子，如果你不知道它有关的一切事情。
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