| 单词 | dogfish | 
| 释义 | dogfishnoun  dog·fish  ˈdȯg-ˌfish    : any of various usually small bottom-dwelling sharks (as of the families Squalidae, Carcharhinidae, and Scyliorhinidae) that often appear in schools near shore, prey chiefly on fish and invertebrates, and are a valuable food source   | 
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