Chemigraph
化学腐蚀凸板
🗣️ 情景例句
Is smoking allowed on the train?
火车上允许吸烟吗？
We look forward to your quotations for the arts and crafts which we are interested in.
希望贵方对我们感兴趣的工艺品报一下价。
They don't get enough air.
（那样）鱼得不到充足的空气。