用法例句：
The cost should average out at about 6 per person.
费用应该是平均每人约6英镑。
We estimated it would cost about 5 000.
我们估计要花费大约5000欧元。
That one mistake almost cost him his life.
那一个差错几乎使他丧命。
I know it won't cost very much but that's not the point.
我知道那花不了多少钱，但这不是重点。
It cost us nothing to go in.
我们没花钱就进去了。