Somasteroid
a. 体海星纲的,体海星亚纲的
🗣️ 情景例句
Where do you usually spend your weekends?
你通常在哪度过你的周末？
I couldn't care less.
我不在乎。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，