raree show
词形变化：
形容词比较级: rarer | 形容词最高级: rarest | 名词: rareness |
同义词：
infrequent | scarce | occasional | uncommon | valuable | unique | singular | unusual | exceptional | sporadic | intermittent | erratic | bloody | juicy | red | pink | underdone | blue | sparse | peculiar | scare | rarified | rarefied |
反义词：