One easy way to do this is to use plastic gallon-sized jugs or two-liter bottles. This is a also a good way to recycle.

一种简便的方法就是用一加仑大小的塑料罐子或两升大小的瓶子；这也是一种很好的循环利用。

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You cannot reasonably tell a child he is allowed only one soda a week if you keep two-liter bottles of Coke and Sprite in the refrigerator.

如果你坚持每星期在冰箱里防止两升瓶装的可口可乐和雪碧，那么你将无法合理地告诉孩子，他每周只能喝一小杯苏打汽水。

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If you decide to re-use storage containers, choose two-liter plastic soft drink bottles - not plastic jugs or cardboard containers that have had milk or fruit juice in them.

推荐在剩余物资商店或野营用具店里购买食品级的贮水容器。如果你决定循环利用水瓶，选择两升装的软饮料塑料瓶而不是那些已经装过牛奶或果汁的塑料瓶或纸制袋。

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"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

And one of the methods that I have done is for some of the smaller plants is to take just, you know, your classic, you know, two-liter pop bottle.

NPR: Vegetable Gardening On A Budget

The Jaguar, with two electric motors and a supercharged 1.6-liter gas engine (the show car version actually uses two microturbines) can manage more than 30 miles on the batteries.

FORBES: Jaguar's Hot New Car Is A Hybrid. Its Price Tag? $1 Million

Take a 20 kilometers-per-liter hybrid, which is a small car with two engines--one gasoline, one electric--that work in collaboration.

FORBES: Magazine Article