The puzzle set contains several tasks in Bubble Notation with gradually increasing difficulty.
就在几年前，这片土地上还是另一番景象。2018年，达博从美国回到冈比亚，子承父业，投身农业，却遭遇“迎头痛击”。“我空有一腔热情，但对水稻种植一窍不通。一开始，杂草比稻苗还高，灌溉靠天，收割靠手。虽然投入巨大，收获却寥寥无几。”达博说。，这一点在体育直播中也有详细论述
。同城约会对此有专业解读
A quadtree reduces this: rebuild the tree each frame, and for each object, query only the nearby region. Objects in distant quadrants are never compared.
Number (17): Everything in this space must add up to 17. The answer is 4-5, placed horizontally; 6-6, placed horizontally.，更多细节参见快连下载安装