（作者单位：北京大学习近平新时代中国特色社会主义思想研究院）
The atmosphere naturally gets about 50-80g daily from small meteors, Wing explains.
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Comparison between the TIN, Knoll’s algorithm, and N-convex dithering using an 8-colour irregular palette. Left to right: TIN, Knoll, N-convex (N=4).
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calls the function over and over in e.g. a timeout loop, until it