cost作名词可数吗

cost既是可数名词，又是不可数名词，表示成本时常用复数形式costs.

例句

Their overriding aim was to keep costs low.

他们的首要目标是维持低成本。

When costs are cut product quality suffers.

一降低成本，产品质量就会受到影响。

Costs are always rising.

费用总是不断地增加。

Costs overran the budget by about 30%.

花费超出了预算约30％。

The house costs a fortune to maintain.

维修这房子花费巨大。

The costs have increased substantially.

成本大大提高了。

These costs are deductible from profits.

这些费用可从利润中扣除。

We need to go into the question of costs.

我们需要研究一下费用问题。