North American bird population is declining. The decline is accelerating in regions associated with intensive agriculture.

· · 来源:alpha资讯

For example, a 500km route might be broken down into ~100 such shortcuts. If each A* shortcut calculation explores 100-1000 detailed road segments, the total detailed segments visited by A* might be around 10,000-50,000. Compare this to the 1,000,000+ segments the old A* might have needed for the entire route!

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有分析預測,德國未來應該會將兩國關係定位為「戰略夥伴」與「系統性競爭者」並存的雙重框架:一方面反對保護主義、支持自由貿易,另一方面強化對中國威權擴張的警惕。路透報導指出,從默茨強調「尋找理念相近的夥伴」,顯示德國正從過去與中國無條件接觸轉向有條件、有限度的合作,訪問中國難以帶來「黃金時代」回歸,而是務實的「有限合作」。