Neobalgin
硫酸钡盐
🗣️ 情景例句
He's the Dean of Admissions for the University of Michigan.
他是Michigan大学的新生注册主任。
Whom will you invite to the picnic?
你将邀请谁参加野餐？
She knew that it must be the baker.
她知道来了一定面包师。