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1·We just harvest them and grow a bunch in a 42-gallon (160-liter) barrel, so we can spray it out in a food-rich environment.

我们只需要收割它们，然后在一42加仑（160升）的桶中种植一大批，这样我们就能把它们洒在一个食物丰富的环境里。

2·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。

3·Sadly, the scientists found 1800 pieces of microplastics per liter of (每升) snow.

遗憾的是，科学家们在每升雪里发现1800粒塑料微粒。

4·Moles per liter per second.

摩尔每升每秒。

5·Or it could be in grams per liter.

或者克每升。

6·He still drank 1 liter of liquor every morning.

他仍然每天早上喝一升酒。

7·So we'll multiply by 1000 milliliters per liter.

所以需要乘以1000毫升每升。

8·And the concentration could be given in moles per liter.

溶液中浓度可以用摩尔每升给出。

9·This is some concentration unit, typically moles per liter.

这是浓度的单位，一般是摩尔每升。

10·The packaging is the same dimension as a 2 liter milk caron.

这种包装有2升牛奶的容积。

公升

1·Containers must be placed and well-sealed in one transparent plastic bag with a press-seal, of a maximum capacity of one liter (quart).

这些东西必须被密封放置在一个有冲压密封圈的，最大容量为一公升（一夸脱）的透明塑料袋中。

2·The cooling suit runs off of the same onboard battery that powers the suit's lamp, fan, and comm link; a pump circulates a liter of ice water (stored in a specially shaped bottle) from head to toe.

冷却装置和套服中的照明、风扇、通讯器使用同样的内置电源；一个帮浦令一公升冰水(储存在一个形状特殊的容器中)从头到脚进行循环。

3·He doesn't tell us how much water we should be using to flush our waste or whether the equivalent of a liter of Evian per person for our farmer's rice crop is 10 times or 100 times too much.

他没有告诉我们应当使用多少水来冲洗废物，抑或用等效于每人一公升矿泉水的水量来浇灌农作物到底是超出了10倍还是100倍。

4·Average petrol prices ranges from 7.55 to 7.65 yuan per liter in Beijing.

北京汽油的平均价格每公升从7.55元到7.65元不等。

5·Worse yet, it's a huge drain on water resources, gulping down up to 2,138 liters of water per liter of ethanol.

更糟糕的是，这项产业需要大量的水。要生产一公升乙醇需要消耗2138公升水。