A strange object which had been detected on the radar for three days suddenly disappeared.
雷达监察了三天的奇怪的物体突然消失了。
The object vanished rapidly after a streak of white light was detected.
据称，此物体白光一现，出现很短时间便迅速消失。
The object vanished rapidly after a streak of white light was detected.
据称，此物体白光一现，出现很短时间便迅速消失。
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