In the past, obtaining fresh water through distillation has consistently been too expensive.
过去，通过蒸馏获得淡水一直成本过高。
| Expression | 过去这些年来，用蒸馏法制取淡水成本一直很高。 |
|---|---|
| Meaning | In the past, obtaining fresh water by distillation has always been too expensive. |
| Reading | guòqu zhèxiē niánlái yòng zhēngliú fǎzhì qǔ dànshuǐ chéngběn yīzhí hěn gāo |
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