As one hemisphere of Earth tilts farther from the sun, the arc of the sun's daily path seen from that location lowers toward the horizon.

当地球一个半球距太阳的倾斜度更大时，从那个位置看到的太阳每日运行轨迹的弧线就会向地平线下降。

youdao

The arc of the Danube recedes towards the horizon.

BBC: In tune with Vienna

At dawn, the Cappadocian valleys glow shades of soft apricot, buttery yellow and rose petal pink as their rippling rock folds arc out to the horizon.

BBC: Choose your own adventure in Turkey