The sun rises at Wusongkou International Cruise Liner Port in Baoshan District. Expats and locals in Shanghai can celebrate New Year's Day by witnessing the first sunrise of 2025 at Wusongkou ...

地球仪在我们的生活中司空见惯，一条条经纬线给地球表面带来了秩序。但在历史上，虽然人们通过对太阳、北极星等天体的观测很容易确定一个地点的纬度，却因为地球自转的关系而无法准确确定一个地点的经度。在没有参照物的海上，缺乏准确的经度信息给航海带来了严重的威胁 ...