Cementite
n. 碳化铁\\n[化] 渗碳体; 碳化铁体
🗣️ 情景例句
Help! Help! I can't swim!
救命！ 救命！ 我不会游泳
Hunger knows no friend.
饥难周友。
So one day they took him to a doctor.
于是有一天他们带他去看医生。