| 单词 | horseshoe crab |
| 释义 | horseshoe crab a large marine arthropod, Limulus polyphemus, of shallow coastal waters of eastern North America and eastern Asia, having both compound and simple eyes, book gills, a stiff tail, and a brown carapace curved like a horseshoe: a living fossil related to the woodlouse. Also called king crab. [1765-75] |
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