柯林斯詞典calyx /?ke?l?ks, ?k?l?ks/ 1. N the sepals of a flower collectively, forming the outer floral envelope that protects the developing flower bud 花萼→compare corolla 返回 calyx劍橋詞典the outer part of a flower formed by the sepals (= the separate outer parts ), which covers and protects the petals , etc. as they develop 花萼（位于花的外側(cè)，有若干萼片組成，開花時(shí)起到保護(hù)花瓣的作用） 返回 calyx