Prewelding
预焊
🗣️ 情景例句
I have spent the last five years working specifically in this field.
过去五年我专门在这个领域里工作。
Today, I'd like to show you something which I'm sure you'll find interesting.
今天我要向你们展示一些东西，我相信你们会感兴趣的。
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。