Nitrobarite
[化] 钡硝石
🗣️ 情景例句
Sure. Would you please sign your name on the back, sir, with your passport number?
每问题。先生，请您在支票背后签上名字和护照号码。
Thank you for inviting us; we had a wonderful time.
谢谢您的邀请，使我们过得很快乐。
Do you often have sports at school?
你在学校经常参加体育活动吗？