Economics is precise about the tax that should, in principle, be levied to deal with negative externalities: the tax on a liter of fuel should be equal to the harm caused by using a liter of fuel.

从经济学的角度来看，为了应对负外部性，原则上应该征收的税收是准确的：对一升燃料征收的税应该等于使用一升燃料所造成的危害。

youdao

youdao

youdao

When the weather is warm, put them into five-liter pots and place them outside.

VOA: special.2009.04.21

Add nine and one-half milliliters of salt to each liter of boiled water.

VOA: special.2009.08.11

"It's so simple. With a two-liter bottle you add sugar, you add extract, you add a small amount of yeast and water, cap it up and in two days they've got root beer.

VOA: special.2011.08.01

The 1.4-liter four-cylinder turbo in the Dodge Dart generates 160 hp, the same as a bigger, 2.0-liter engine without a turbo.

FORBES: Turbocharging to Save Gas, Instead of to Go Fast

That means a lot more heavy-duty trucks, with 11-liter and 13-liter engines.

FORBES: Magazine Article

Rotate between the 2014 Dodge Challenger SRT8 (Special Research Team 6.4 liter V8 Hemi - shown), 2013 Corvette Z06 (7.0-liter 505-horsepower V8) and 2014 Camaro ZL1 (0-60MPH in 4.1 seconds).

FORBES: Drive Really Fast