Johnstonite
混硫方铅矿
🗣️ 情景例句
He is tough in doing everything.
他不管做什么事都很有毅力。
He applied for the post.
他申请这个职位。
Pardon? Would you please say that again more slowly?
对不起，请你慢点儿再说一遍好吗？