Multiwall
a. & n.多层牛皮纸制的(袋)
🗣️ 情景例句
Well, it's a very easy operation, Carl.
这是个很简单的手术 Carl。
Thank you.
谢谢。
When it has been decided where we are going to drill, we put up at the surface an oil derrick.
当确定钻孔地点后，我们就在那里竖起一个井架。