Undecynic acid
[化] 十一碳炔酸; 十一碳一炔酸
🧩 词语组成解析
🗣️ 情景例句
I made an appointment with the doctor at three.
我和医生约好3点钟看病。
There must be someone behind the door.
门后必然有人在。
One of the first jobs when you start work in an office is to learn how to use every piece of equipment.
你在办公室开始工作的第一件事就是要学会怎样使用办公室里的每样设备。