Metalsorter
金属鉴别仪
🗣️ 情景例句
We have to work hard to get people interested in politics.
我们必须努力使人们对政治感兴趣。
Do I look dirty?
我的样子很肮脏吗？
I'd like to invite you to dinner before you go. What about Thursday?
我想在你走之前请你吃饭。周四怎么样？