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单词	arc second
释义	arc second noun : second entry 4 sense 1a Example Sentences Recent Examples on the Web The night sky brightness must typically be equal to or darker than 21.2 magnitudes per square arc second. Stacey Leasca, Travel + Leisure, 6 May 2021 Hubble has a diameter of 2.4 meters, which gives a resolution of 0.13 arc second for observations at a one-micron wavelength. Meredith A. Macgregor, Scientific American, 19 May 2020 Word History First Known Use 1885, in the meaning defined above
随便看	oligochaete oligochaetes oligochaetological oligochaetology oligochromes oligochronometer oligoclase oligoclases oligodendriae oligodendrias oligodendrocyte oligodendrocytes oligodendroglia oligodendroglial oligodendroglias oligomenorrheae oligomenorrheas oligomer Oligomera oligomeric oligomerization oligomerizations oligomers oligomyodian oligonephric

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。