| 单词 | water-vascular system |
| 释义 | water-vascular system in American English (ˈwɔtərˈvæskjələr) in echinoderms, a system of closed tubes and ducts filled with sea water containing some protein, and functioning variously, as in locomotion, food gathering, clinging, and respiration water-vascular system in American English (ˈwɔtərˈvæskjələr, ˈwɑtər-) noun Zoology a system of closed, fluid-filled tubes and ducts of echinoderms used in clinging,locomotion, feeding, and respiration Word origin [1865–70]This word is first recorded in the period 1865–70. Other words that entered Englishat around the same time include: batting average, black belt, maverick, tick-tack-toe, valence |
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