For these unknown sources, channels of food store vendor, you must have been "taste" is!
对于这些来源不明，渠道不清的小店小商贩食品，你也一定髧“品尝”过吧！
The nature and even distance to some of the fainter sources remain unknown.
一些射线源较弱，它的性质和距离都仍然未知。
The nature and even distance to some of the fainter sources remain unknown.
一些射线源较弱，它的性质和距离都仍然未知。
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