彗星的

The earth crosses the tracks of certain comets.

地球穿过某些彗星轨迹线。

Halley's Comet has an eccentricity of about 0.9675.

哈雷彗星偏心率约为0.9675。

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

在古代，彗星出现引起恐慌。

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】战争和地球不和彗星发生碰情况下，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.

如果你查测定元素比率，你将得出结论——彗星颗粒上去更接近多孔球粒陨石IDPs而不是CI球粒陨石。