彗星

The earth crosses the tracks of certain comets.

球穿过某些星轨迹线。

Halley's Comet has an eccentricity of about 0.9675.

哈雷星偏心率约为0.9675。

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

古代，星出现引起普遍恐慌。

Did you ever see a comet?

你看见过星吗?

Recently they have discovered a comet.

最近他发现了一颗星。

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

那星将（不用 shall ) 87年后返回。

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

不发生瘟疫】战争和球不和星发生碰撞情况下，人类人口将会迅速发展。

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.

如果你查看我测定元素比率，你将得出结论——我星颗粒看上去更接近多孔球粒陨石IDPs而不是CI球粒陨石。