Borides
硼化物陶瓷材料
🗣️ 情景例句
We'll call in a couple of days.
我们两三天后打电话。
Stamp-collecting is a popular hobby.
集邮是一种普遍的业余爱好。
No. She's wearing green trousers, and a yellow sweater.
不。她穿绿色裤子，黄色毛衣。