Sintropac
加铜铁粉; 铁铜混合粉末
🗣️ 情景例句
Thank you. I appreciate your help.
谢谢！很感谢你的帮助。
Would you please make my reservation to Chicago for tomorrow?
请帮我预订明天去芝加哥的座位好吗？
At the same price?
价钱一样吗？