Tephra
[复]n.[用作单或复][地]火山灰
🗣️ 情景例句
Scientists have confirmed that the Earth is, indeed, round.
科学家证实，地球确实是圆的。
Will the flight be delayed?
这班机会延误吗？
Moondwellers will be able to fly in space at only three percent of the cost of similar journeys by their terrestrial cousins.
月球居民在太空遨游的费用仅是地球上朋友飞越同样路所需费用的3%。