零成本的英文：
zero cost

zero是什么意思：
n. 零；零点；零度；没有
v. 瞄准；聚焦

These suitable values will be zero or infinity.
这些适当的数值可以是零，也可以是无穷大。

Make sure you are not dividing by zero.
确保不会除零。

The temperature will be above zero.
气温将在零度以上。

His hope was reduced to zero.
他的希望化为乌有。

These suitable values will be zero or infinity.
这些适当的数值可以是零，也可以是无穷大。

cost是什么意思：
v. 花费；使付出；估价
n. 费用；代价；成本；损失

Cost was no consideration.
费用无关紧要。

The cost will be astronomical.
费用将是一笔天文数字。

These costs are charged to an asset account entitled organization costs.
这些成本被计入一个名为开办费的资产账户。

In this period, the cost would be enormous.
在这期间，就会损失惨重。

These chairs cost 40 each.
这些椅子每把价钱为40英镑。