The eco-light is good for earth, and it's cost-effective and convenient, because it doesn't have to be changed every few months.

环保灯对地球来说是好的，而且它很省钱、方便，因为它不需要每隔几个月就更换一次。

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We’re going to pay for it later as the rising cost of polluting our earth and heating up our climate comes to collect its toll.

为了治理地球上的环境污染和温室效应，我们将支付更多的后续成本，这些成本也许高昂得难以计算。

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It is shown that the mixed rare earth carbonate is superior to pure cerium oxide and reduces the cost of decoloring agent by 50%.

表明采用混合碳酸稀土作玻璃脱色剂可获得良好的脱色效果并使脱色成本降低50%。

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We should be looking to use our resources to protect life on earth, plus it would cost a fraction of the proposed lunar mission.

CNN: Space's threat to civilization

Andrew Cheng, project scientist for the Eros probe NEAR-Shoemaker, said the big question facing commercial space ventures remains what it will cost to get their equipment off Earth.

CNN: 'Fireflies' to scope out space rocks for mining