Arenigian
[地质]阿仑尼克阶(早奥陶世晚期)
🗣️ 情景例句
I am in the 7th grade.
我是七年级。
It's an incredible story to me.
这对我来说是一个无法相信的传闻。
It has belonged to our family for a long time.
我们家有这件乐器已经很久了，