1·I can hardly wait to see the new comet.
我迫不及待地想看到那颗新的彗星。
2·They combine with dust particles from the comet to form a huge cloud.
它们与来自彗星的尘埃颗粒结合在一起，形成了巨大的云团。
3·The trip from Earth by "Philae" had taken ten years! The scientists had no idea what the surface of the comet would be like.
“菲莱”号从地球出发的旅行已经花了十年的时间！科学家们不知道彗星的表面会是什么样子。
4·That’s why comet tails always point away from the sun.
这就是为什么彗星总是面向太阳拖着尾巴。
5·That's why comet tails always point away from the sun.
这就是为什么彗星总是面向太阳拖着尾巴。
1·An asteroid or comet fragment around 60 meters across is believed to have been behind the Tunguska Event, a powerful explosion that took place over Russia in 1908.
据信，1908年俄罗斯上空发生的强劲爆炸——通古斯大爆炸背后，有一个直径约六十米的小行星或慧星碎片。
2·Meteor showers are just the debris of a passing comet or sometimes the debris from a fragmented asteroid.
流星雨只是慧星经过的残留物、或偶而也是来自破碎陨石的碎片。
3·The pieces of the comet's nucleus appear to have been loosely assembled, so that they broke apart soon after the icy "glue" in between began to vaporize.
慧星的核心部位结合得很松散。当粘着它们的冰开始汽化时，它们很快就解体了。
4·The comet is not bound and makes but one visit to the solar system.
慧星是不受约束的，只是来访问一次太阳系。