Like a frozen asteroid belt, it's littered with chunks of ice and frozen methane and ammonia.
象一个冰冻的小行星带一样，它的上面布满冰柱及凝固的甲烷及氨。
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The Oort cloud is a vast belt of dust and ice that is believed to lie around one light year from the Sun and is the origin of many of the comets that pass through our solar system.
The Seaswarm robots, which were developed by a team from MIT's SENSEable City Lab, look like a treadmill conveyor belt that's been attached to an ice cooler.