Borides
硼化物陶瓷材料
🗣️ 情景例句
Keep this information confidential, other companies would kill to get their hands on this.
这些资料可要保密，其他公司千方百计想得到它。
I hope you believe me.
我希望你相信我。
I had a letter from my sister yesterday.
昨天我收到了姐姐的一封信，