5 年前
视频简介
In 2014, the International Space Station had to move three times to avoid lethal chunks of space debris and there is an increasing problem of satellites mysteriously breaking down. With first-hand accounts from astronauts and experts, Horizon reveals the scale of the problem of space junk. Our planet is surrounded by hundreds of millions of pieces of junk moving at 17,000 miles...。朝鲜战争中，在攻打连珠峰战役里，中国人民志愿军和朝鲜人民军以及朝鲜的老百姓，相互支持，共同战斗，以鲜血铺写了伟大的中朝友谊，颂扬了崇高的国际主义精神。。
标签
英语