日本的天文学家说，最知名星云之一的人马座三裂星云，它的壮丽景观可正是由两朵气体和尘埃云的碰撞造成的。
Astronomers in Japan say one of the best-known nebulae-the Trifid, in the constellation sagittarius-owes its splendor to a smashup between two clouds of gas and dust.
日本的天文学家说，最知名星云之一的人马座三裂星云，它的壮丽景观可正是由两朵气体和尘埃云的碰撞造成的。
Astronomers in Japan say one of the best-known nebulae-the Trifid, in the constellation sagittarius-owes its splendor to a smashup between two clouds of gas and dust.
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