Petroleum refining(processing)
[化] 石油炼制
🧩 词语组成解析
🗣️ 情景例句
Come in.
请进。
We must listen carefully to the teacher.
我们必须注意听老师说的话。
He speaks little Chinese, so it's difficult to communicate with him.
他只能讲一点汉语，所以和他交流很难。