buy同音异义词有：by bye

例句

1、

You would do well to consider all the options before buying.

你购买之前最好对各种选择都考虑一下。

2、

We buy our fruit and vegetables at the market.

我们在市场上购买水果和蔬菜。

3、

Now is a good time to buy a house.

现在买房子正是时候。