单词	diving beetle
释义	diving beetle noun : any of various predatory aquatic beetles (family Dytiscidae) that breathe while submerged using air trapped under their elytra Example Sentences Recent Examples on the Web Various species of aquatic insects, such as the predaceous diving beetle, use bubbles for breathing underwater. Elizabeth Gamillo, Smithsonian Magazine, 27 May 2021 From horror to hope Scientists have known for a few decades that diving beetles share the waterlogged limestone cavern known as Devil’s Hole with the pupfish. Jason Bittel, National Geographic, 1 Mar. 2019 Word History First Known Use circa 1889, in the meaning defined above
随便看	sets about sets against sets apart sets aside sets at sets back sets by sets down sets eyes on sets foot in sets forth sets in sets in motion sets off sets on sets one's heart on sets one's teeth on edge sets oneself against sets oneself up as sets oneself up as something sets out sets something or someone against sets something straight sets store by sets straight

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