belt cloud system
常見例句
- Normal comets fall into the inner regions of the solar system from icy reservoirs in the distant Kuiper belt and Oort cloud.
通常來說，彗星來自距離遙遠(yuǎn)且冰天雪地的柯伊伯帶和奧爾特星云然后掉入太陽系中的內(nèi)層區(qū)域。 - 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.
奧爾特云是一個(gè)由粉塵和冰組成的龐大云帶，據(jù)信它距離太陽約一光年，許多穿越我們太陽系的彗星都來自那里。
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