Calaveras
含煤变质沉积岩
🗣️ 情景例句
I'm so tired, I have to take a nap when I get home.
我太累了，回到家后一定要睡上一会儿。
This is my fourth year of college, I'm a senior.
这是我上大学的第四年，我是四年级学生。
Many strange new means of transport have been developed in our century,
本世纪已研制出许多新奇的交通工具，