)unique
唯一的, 独特的1. radically distinctive and without equal
同义词：alone, unequaled, unequalled, unparalleled
2. (followed by `to') applying exclusively to a given category or condition or locality
3. the single one of its kind
同义词：singular
4. highly unusual or rare but not the single instance
- 习惯用语
- unique to... 只有...才有的
