Ferrichromspinel
铁硬铬尖晶石
🗣️ 情景例句
We urgently need to establish our own credit system.
我们期待建立我们自己的信用机制。
Silence in times of suffering is the best.
遭到不幸时，沈默是上策。
It's up to you to decide.
这主要取决于你。