经常用的能量单位有：千瓦/小时、英国热量单位、马力/小时、焦耳、卡等。

Typical units of energy are kW/h, Btu (British thermal unit), Hp/h, ft/lbf, joule and calorie.

对我来说，最困难的要数英制热量单位税了。

The toughest issue for me was the BTU tax.

戈尔也再次催促要提出征收英制热量单位税。他说，这种税将促进我国节约能源和能源独立。

Gore again pushed for the BTU tax, saying it would promote energy conservation and independence.