重点词汇
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独一无二
unique; irreplaceable; in a class of its own; the one and only; one of a kind; solely
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缩写
abbreviate; shorten; abridge; abbreviation; acronym; initialism; contraction; abbr
Unique abbreviation
独一无二
unique; irreplaceable; in a class of its own; the one and only; one of a kind; solely
缩写
abbreviate; shorten; abridge; abbreviation; acronym; initialism; contraction; abbr