求COST的名词用法？

cost 词性变化
n.
成本；费用

cost price
成本价格
The cost of living is going up.
生活费用在提高。

cost 代价；价格

The cost of the house was too high for me.
对于我来说，这房子的价格太高了。
牺牲

He saved his daughter at the cost of his life.
他以牺牲自己的生命挽救了女儿。

a cost price: 成本价
the cost of living=living cost: 生活成本
at a cost of $200: 200 美圆的代价
at a heavy cost: 遭受惨重的牺牲
...

The cost of living is high/low.