利用该系统进行了五次高空字宙尘粒的收集飞行，简述了对所收集的尘粒进行系统研究的结果。

Five flights for collecting cosmic dust have been launched with the balloon-basket system. A brief acounr of the results of study of collected dust is given as well.

youdao

哦，太可怕了。听这个标题，“星球大战悲剧：美国‘挑战者’号字宙飞船发射73秒后爆炸。”

Oh, it's horrible. Listen to this headline: "Star War Tragedy: American Spaceship Challenger, Exploded 73 seconds After Launching. ""

youdao