Bismuthyl
氧铋基
🗣️ 情景例句
Feel free to look around.
请随意到处看看。
Which foot hurts?Is it the left one?
哪个脚受伤?是左脚？
Tomorrow I want you to give us a talk, Jim.
吉姆，明天我想请你给我们作一次讲话。