The appearance of a comet caused universal dismay in the ancient world.

在古代，星的出现引起普遍的恐慌。

The comet will (not shall ) return in 87 years.

那星将（不用 shall ) 在87年后返。

The earth crosses the tracks of certain comets.

穿过某些星的轨迹。

Did you ever see a comet?

见过星吗?

Recently they have discovered a comet.

最近他们发现了一颗星。

The population will keep going up if there is no murrain or no interference between the earth and comet.

在不发生瘟疫】战争和不和星发生碰撞的情况下，人类的人口将会迅速的发展。

"Selective Breeding has produced more than 125 Breeds, including the veiltail, with a three-lobed, flowing tail, and the common, pet-shop comet. "

人们选择和培育不正常的个体,已经育成125个以上的金鱼品种,包括常见的具三叶拂尾的纱翅、戴绒帽的狮子头以及眼睛突出且向上的望天。

If you look over the element ratios we measured, you might conclude that our comet particles look more like chondritic porous IDPs than CI chondrite meteorites.

如果查我们测定的元素比率，将得出结论——我们的星颗粒上去更接近多孔粒陨石IDPs而不是CI粒陨石。