Nitromagnesite
镁硝石
🗣️ 情景例句
I see how people spend their leisure time--
我看到人们怎样利用闲暇时间
I was on the track team 10 years ago.
十年前，我在田径队。
Oh, hello, Jim. Glad to see you again. How are you?
啊，你好，吉姆。很高兴又见到你。你好吗？