大学英语词汇短语释义解析及例句 know chalk from cheese


释义：

know chalk from cheese 精明；有判断力

例句：



Such a young child does not know chalk from cheese.

这样年幼的孩子是不辨是非的。



In fact, he often changes girlfriend, for he doesn't know chalk from cheese.

事实上，他经常换女友，因为他不知好歹。