购买能力的英文：
ability to buy

参考例句：

Most of our regal customers have the highest opinion of your article,but the price is beyond their means.
大多数经常光顾的买主均对贵方货物有极好的评价，但价格却超出了他们的购买能力。

ability是什么意思：
n. 能力，力量

Prerequisite: Ability to use telekinesis as a supernatural ability.
先决条件：能以超自然能力使用心灵遥控能力。

The ability of bacteria to be genetically transformable.
遗传力细菌的遗传性转化的能力。

lacking the ability needed;incapable
不胜任的;无能力的

Do not prostitute your ability.
不要滥用你自己的才能。

How long will this ability persist?
这种能力还能维持多久？

buy是什么意思：
n. 所购的物品；便宜货；买卖
v. 买；获得；购得；收买；相信

Buying bonds is safer than buying stocks.
买债券比买股票风险小。

It's a good buy at that price.
这是一笔价钱合算的买卖。

That shirt was a really great buy.
这个衬衫真是便宜货。

It's a good buy at that price.
这是一笔价钱合算的买卖。

That shirt was a really great buy.
这个衬衫真是便宜货。