square kilometre
名词 n.
英文释义
名词 n.
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Standard unit of area, symbol km², equal to the area of a square whose sides are one kilometre long; 10⁶ square metres.
— Located at the southern end of the exercise area, Wuqiu Dao consists of two islets - Daqiucun [Dachiu-tsun^([sic – meaning Tachiu-tsun])] and Xiaoqiucun [Hsiaochiu-tsun] with each covering approximately one square km.
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数据来源: Wiktionary