Placoderm
n. [古生]盾皮鱼
🗣️ 情景例句
What's the long buildings?
那座长形的建筑是什么？
No pain, no gain.
不劳则无获。
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%。