Dibutyryl
联丁酰基
🗣️ 情景例句
I'm Richard. What's your name?
我是Richard！你叫什么？
The lion's skin is never cheap.
狮皮从不贱。
Our TV set was broken last week. He mended it for us.
上星期我们的电视机坏了。他为我们修好了。