Werthemanite
水铝矾
🗣️ 情景例句
I'm a foreign student, and I'd like to make some new friends.
我是个外国学生， 我想交几个新朋友。
Don't forget to put stamps on the letter before you mail it.
不要忘记在寄信以前把邮票贴在信封上。
He had been there for nearly ten hours.
他已经在烟囱里被困了将近10个小时。