20 年前
视频简介
Massive machines require engineering extremes. The massive man-made satellite, commonly known as the International Space Station, hurtling around the Earth at 27,600 km an hour, has been a temporary home for humans for the last 20 years. The biggest land vehicle on earth, a bucket excavator titled Bagger 293, that can move 240,000 cubic meters of dirt each day. Innovation has a...。本系列纪录片走进野生动物保护一线，围绕七个守护国家重点保护野生动物的故事展开。本片记录了科研人员、专家学者、护林员、志愿者利用各种科学方法跟踪、监测、保护各类野生动物，使动物种群得以延续、自然生态系统多样性得以保护的故事。。
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歌舞
访谈
侦探
动漫周边
