Meshingtester
囓合检查仪
🗣️ 情景例句
She worried constantly.
她经常烦恼。
I'm writing to a friend of mine in South American.
我在写信给一个美国南部的朋友。
I'm afraid he's out. He won't be back until tomorrow.
对不起，他外出去了，明天才回来。