Sipylite
褐钇铌矿
🗣️ 情景例句
It's been an extremely hectic day.
今天忙的乱七八糟。
I could only guess the number of people in the room.
我无法正确地猜测房间里面有多少人。
Now the other stuents open their eyes, and guess who has the eraser.
现在其余的学生张开眼，然后猜谁手里有橡皮擦。