dirty ice

comets consist of "dirty ice" , rather than solid rock, and so contain little iridium.

彗星是由“脏冰”所组成，而不是像小型那样由固体岩石组成，所以只含有少量的铱。

Ice can become soiled through being transported on dirty floors of freezing rooms, carried by soiled human hands, or exposed to unsanitary ice machines.

就比如说，冰块上可能附着冷冻室地上的脏东西，也可能粘着搬运工手上的细菌，亦或者被不干净的切冰机器所玷污。

in winter, a large, dirty ice mound used to form by the ditch. many boys were fond of "whipping" tops in the ditch beside the ice mound.

冬季时那里隆起了一个肮脏的大冰湖，许多男孩子都喜欢在冰湖下抽陀螺玩，他们叫它“冰嘎”。

ganymede, the largest moon in the solar system, has a dirty ice surface cut by fractures and peppered by impact craters.

这颗太阳系中最大的卫星，表面冰盖布满断层的切口和火山灰的粉末。

Comets consist of " dirty ice ", rather than solid rock, and so contain little iridium.

彗星是由 “ 脏冰 ” 所组成, 而不是像小型那样由固体岩石组成, 所以只含有少量的铱.