Permian
a. 二叠纪的, 二叠纪岩的\\nn. 二叠纪(岩)
🗣️ 情景例句
I'm almost ready here.
我快要准备就绪了。
I've got an slight in my chest.
我的胸口有点痛。
How many spiders are engaged in this work no our behalf?
有多少蜘蛛在为我们效力呢？