您要查找的是不是:
- 中胶层,一种将腔肠动物的内外细胞层分开的胶状物质层the layer of gelatinous material that separates the inner and outer cell layers of a coelenterate
- 各种通常是自由游动的海生腔肠动物,其凝胶状水母阶段是其生命周期中的主要阶段any of various usually free-swimming marine coelenterates having a gelatinous medusoid stage as the dominant phase of its life cycle
- 来源于两个胚层(外胚层和内胚层)的,用于低等无脊椎动物,如寄生虫和腔肠动物derived from two embryonic germ layers,the ectoderm and the endoderm;used of lower invertebrates,such as sponges and coelenterates
- 不动motionless
- 肠intestines
- 心动aroused in interest
- 腔tune
- 脉动pulsating movement
- 以世代交替为特色的腔肠动物;通常群居的水螅阶段先于水母阶段;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.
- 不动的motionless
- 肠胃炎gastroenteritis
- 点动crawl
- 虎是一种普通的猫科动物。The tiger is a common representative of the cat family.
- 从动driven
- 内腔lumen
- 肠粉steamed vermicelli roll
- 异动transaction
- 空腔cavum
- 断肠heartbroken
- 微动jiggle