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	strengthened strengthener strengtheners strengthening strengthening card strengthens strengthful strengthless strengthlessly strengthlessness strengths strengthy strenuosities strenuosity strenuous strenuouser strenuousest strenuouslier strenuousliest strenuously strenuousness strenuousnesses strenuousser strenuoussest strep

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