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- 中膠層，一種將腔腸動(dòng)物的內外細胞層分開(kāi)的膠狀物質(zhì)層the layer of gelatinous material that separates the inner and outer cell layers of a coelenterate
- 各種通常是自由游動(dòng)的海生腔腸動(dòng)物，其凝膠狀水母階段是其生命周期中的主要階段any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle
- 來(lái)源于兩個(gè)胚層（外胚層和內胚層）的，用于低等無(wú)脊椎動(dòng)物，如寄生蟲(chóng)和腔腸動(dòng)物derived from two embryonic germ layers,the ectoderm and the endoderm;used of lower invertebrates,such as sponges and coelenterates
- 不動(dòng)motionless
- 腸intestines
- 心動(dòng)aroused in interest
- 腔tune
- 脈動(dòng)pulsating movement
- 以世代交替為特色的腔腸動(dòng)物；通常群居的水螅階段先于水母階段；水螅和水母。coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes.
- 不動(dòng)的motionless
- 腸胃炎gastroenteritis
- 點(diǎn)動(dòng)crawl
- 虎是一種普通的貓科動(dòng)物。The tiger is a common representative of the cat family.
- 從動(dòng)driven
- 內腔lumen
- 腸粉steamed vermicelli roll
- 異動(dòng)transaction
- 空腔cavum
- 斷腸heartbroken
- 微動(dòng)jiggle
