形容词
中文翻译：最稀有的
同义词：
['least', 'scarcest']
例句：
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1.The rarest species of the animal kingdom is the cheetah.
动物王国中最稀有的物种是猎豹。
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2. This mineral is the rarest in the world and has been found only a few times.
这种矿物是世界上最稀有的，仅发现过几次。
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3.The rarest gemstones are often worth their weight in gold.
最稀有的宝石通常价值等同于其重量的黄金。