Platinum, iridium and the rest are expensive precisely because they are rare.
正因为稀有,铂、铱等矿物才价格不菲。
单词 | platinum iridium |
例句 |
原声例句
经济学人-科技 Platinum, iridium and the rest are expensive precisely because they are rare. 正因为稀有,铂、铱等矿物才价格不菲。 |
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