Polyoxamide
聚乙二酰胺
🗣️ 情景例句
Good morning. This is Huang Feng.
早上好，我叫黄凤。
Take my jacket if you are cold.
如果你觉得冷，穿上我的夹克吧。
I have just heard from my sister, Mary.
我刚收到我妹妹玛丽的一封信。