Cohydrol
石墨的胶态溶液
🗣️ 情景例句
Are all these goods made in your factory?
所有这些货物都是贵厂生产的吗？
Take care of yourself and don't forget to keep in touch.
多多保重。别忘了保持联系。
Then knowledge began to be accumulated according to a systematic plan.
于是，知识便开始有系统有计划地积累起来。