计费的英文：
charging

Accountancy Fees
审计费

Recharging document
分段计费单证

However, most of these massaging masters charge by the hour.
然而，大多数的按摩专家是以小时计费的。

Bicycle can be hired by the hour or by the day .
自行车可按小时或天数计费租借使用。

charge the enemy
向敌人冲去

mileage charges
按英里程计算的运费

What is this charge for?
这项费用是什么？

Is there an extra charge?
有额外的费用吗？

The nucleus is formed of neutrons with no charge and protons with a positive charge
核子是由不带电荷的中子和带正电荷的质子形成的。