英语词汇“light-second”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	light-second
释义	light-second 英'laɪts'ekənd美'laɪts'ekənd COCA²⁸⁰¹³⁶⁺⁵ 基本英英 n.光秒¹⁰⁰ 名词 light second: the distance light travels in a vacuum in one second; approximately 300,000 kilometers
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