25 年前
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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...。《向前一步》是中国首档人和公共领域对话，城市公民与公共政策对话的社会民生类节目。旨在通过城市管理者与普通百姓之间平等的对话与沟通，帮助分歧双方达成一致。节目勇于打破社会民生类话题壁垒，致力于打造中国首个公民课堂。。
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