识别不清的卫星 questionable satellite; unidentified satellite 查清识别不明的飞机 clear an unidentified aircraft; investigate an unidentified aircraft ..
双语例句
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That launch marked the inauguration of a new space centre, at an unidentified desert location, which included an underground control station and satellite launch pad.
In this case, a leading possibility is that the signal originates from an unusual modulation between a GPS satellite and an unidentified Earth-based source.