作为动词：
1.obtain in exchange for payment
买,购
we had to find some money to buy a house.
我们得筹钱买房子.
2.often with negative]be a means of obtaining (something) through exchange or payment.
换得；买到；获得
money can't buy happiness.
金钱不能买到幸福.
3.procure the loyalty and support of (someone) by bribery.
向…行贿,收买
here was a man who could not be bought.
这里有个不能被收买的人.
I'll buy off the investigators.
我将收买调查者.
或者名词n.
交易,买卖
He made a buy of wheat last week.
上星期他做了一笔小麦的买卖.