Lamagal
镁铝耐火材料
🗣️ 情景例句
Too easy for you?
对 ，太容易了
How long will you remain in the United States?
你将会在美国逗留多久？
One day a letter from my father arrived at the school, asking for a teacher for me.
有一天，我父亲的信寄到学校，请求为我聘用一名教师。