Pentamerida
[古生]五房贝属
🗣️ 情景例句
You must observe these simple rules.
你必须遵守这些简单的规定。
It's up to you.
一切由你决定。
We've been anxious about you. We were expecting you back much earlier.
我们都为你们着急呢。都盼着你们早点儿回来。