单词	attosecond
释义	attosecond noun at·​to·​sec·​ond ˈa-(ˌ)tō-ˌse-kənd  -kənt : one quintillionth (10−18) of a second An attosecond is to a second what a second is to the age of the universe. IEEE Spectrum Example Sentences Recent Examples on the Web Not a lot: a clock needs to be accurate to within a few attoseconds (10-18s) to be able to detect centimeter differences in height. Chris Lee, Ars Technica, 13 Apr. 2020 Researchers have created light pulses lasting just 53 attoseconds using high-speed lasers. David Labrador, Scientific American, 25 Jan. 2012 Word History Etymology atto- + second entry 4 First Known Use 1962, in the meaning defined above
随便看	no man no match for no matter no matter how you slice it no matter what no mean no mean feat no moon no more no more mr. nice guy not have a hair out of place not have a leg to stand on not have a pot to piss in not have a stitch on not have any use for not have it in one not have the faintest idea not have the faintest idea/notion not have the faintest notion not have the faintest/slightest idea not have the foggiest not have the slightest idea not have to not have to be that way not hear of

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