Tofms
[化] 飞行时间质谱仪
🗣️ 情景例句
Richard! Welcome! Good luck tonight! Richard
欢迎 祝你今天晚上好运
Did you see Mr. Jones yesterday?
你昨天看见琼斯先生了吗？
He's over there. He's cleaning the car.
他在那边，在洗车。