Echinoids
(echinoid 的复数) n.[动]海胆纲动物\\na. 海胆状的, 海胆属的
🗣️ 情景例句
You look much younger than ... years old.
你看起来比……年轻多啦。
It is a long lane that has no turning.
路必有弯。
Errors and uncertainties multiply, cascading upward through a chain of turbulent features,
错误和不可靠性上升，接踵而来的是一系列湍流的微状，