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	a match made in heaven a matter of a matter of conjecture a matter of debate a matter of importance a matter of interest a matter of life and death a matter of opinion a matter of principle a matter of record a matter of routine a matter of some concern a matter of taste a matter of time a matter of urgency a matter of urgency/importance a max a maximis ad minima a meal in itself a means to an end a meeting of (the) minds a meeting of minds a meeting of the minds a men a mensa et thoro

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