Sintropac
加铜铁粉; 铁铜混合粉末
🗣️ 情景例句
Why not give the people of Riverdale a clear choice?
为什么不让Riverdale的人民有一个明确的选择呢？
Guess how old I am.
猜测我有多大。
Li Lei went into the school and found Miss Zhao in the school library.
李垒走进学校，在学校图书馆里找到赵小姐。