快递公司对超重行李收取5美元的费用。

The courier service applies a $5 ___fee for overweight luggage.

快递公司按包裹的重量收费。

The courier company charges based on the ___weight of the package.

这批茶叶需要缴纳每磅2英镑的磅费。

This shipment of tea is subject to a $2 ___poundage fee per pound.