单词	attosecond
释义	attosecondat‧to‧sec‧ond /ˈætəʊˌsekənd $ -toʊ-/ noun [countable] technical a unit of time that is equal to 10 to the power of minus 18
随便看	hand tool hand towel handwash handwriting handwritten handy handyman Handy, W.C. hang hangar hangdog hanger hanger-on hang-glider hang-gliding hanging hanging basket hangman hangnail hangout hangover Hang Seng Index hang-up Hani, Chris hank

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