名词中文翻译
中文翻译：未宣布的卫星
同义词：
['unannounced payload', 'unannounced payload satellite']
例句：
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1. The unannounced satellite was launched into orbit last week.
上周发射了一颗未宣布的卫星。
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2.The unannounced satellite carried a large amount of data back to Earth.
这颗未宣布的卫星携带了大量的数据返回地球。
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3. The unannounced satellite was used to monitor the weather conditions in the area.
这颗未宣布的卫星被用来监测该地区的天气条件。