FirstFT: the day's biggest stories
18歲時，她憑藉空中技巧與U型場兩金成為自由式滑雪最年輕奧運冠軍；隨後再奪坡面障礙技巧銀牌，成為單屆冬奧首個摘得三枚獎牌的選手。
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You look at a region of the image. If all the pixels are roughly the same color (below some threshold), you store the average color for the whole region as a single value. If the pixels vary too much, you split the region into four quadrants and try again.
全链路性能调优：实现成本下降 50%