| 单词 | ambulacrum |
| 释义 | Word Frequency ambulacrum(ˌæmbjʊˈleɪkrəm) nounWord forms: plural -ra (-rə) any of five radial bands on the ventral surface of echinoderms, such as the starfish and sea urchin, on which the tube feet are situated Derived forms ambulacral (ˌambuˈlacral) adjective Word origin C19: from Latin: avenue, from ambulāre to walk |
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