Ulmain
凝胶化植物质煤
🗣️ 情景例句
It's common practice.
这是惯例。
If he doesn't, will you paint it?
如果他不，你会油漆它吗？
We offered them food and spoke to them kindly, but they remained motionless.
我们给他们东西吃，客客气气地同他们交谈，但他们却一动也不动。