Sphaeridium
球棘(海胆)
🗣️ 情景例句
But it's not going to be easy.
不过这事可不容易。
A friend without faults will never be found.
没有缺点的朋友是永远找不到的。
Mars has an extraordinary fascination for would-be voyagers.
火星对未来的星际旅客来说有着特殊的魅力。