GbEng
一谈到别的事情时,他们的记性并不是很好,但他们却记得彗星。 Their memory wasn't very good when it came to recalling other things, but they remembered the comet.
彗星和其他的行星同样是太阳家族的成员。 Comets are just as much members of the sun's family as (are) the other planets.
彗星象行星一样绕太阳运转,然而其轨道呈狭长的椭圆形。 Comets move around the sun like planets, but in long oval course.
彗星上的冰块在太阳热的作用下迅速而壮观地升华成气体。 The comet's ice, heated by the sun, rapidly and spectacular sublimate to gas.