想像你用一根牙签以高速度去戳一个橘子。你可以将那橘子造成对称而且线形的切痕？
Think of using a tooth-pick to poke an orange at highspeed. See if you can make a symmetrical linear cut.
想象你用一根牙签以高速度去戳一个橘子。你可以将那橘子造成对称而且线形的切痕？
Think of using a tooth-pick to poke an orange at high speed. See if you can make a symmetrical linear cut.
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