I think they treat 6 10-minute slots as 6 events happening one by one. If the first, 2nd, 3rd, 4th, 5th, or 6th, neither one has a start coming, that ends up with no start coming in the whole hour.
回复:"a shooting star is constant throughout the hour,"What it me
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toatally different story.
-jinjing-
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01/28/2011 postreply
11:50:53