n.割干草;堆干草
The cows were feeding on hay in the barn. 母牛正在牲口棚里吃乾草呢。
She made hay of my argument. 她把我的论点搅得乱七八糟。
Make hay while the sun shines. [谚]把握时机;趁热打铁。
I adviced him to make hay while the sun shone. 我劝他抓紧时机。