Akrit
钴铬钨工具合金, 钴铬钨系刀具用铸造 合金, 特硬耐磨合金
🗣️ 情景例句
There is still a week to go before the vacation begins.
现在距离假期还有一星期。
Thank you.
谢谢。
The earth shook for quite a while.
地面震动了好一阵子。