Alfenide
阿尔芬纳德镍黄铜(耐稀酸), 铜镍合金
🗣️ 情景例句
I'm sorry I missed him. I had to work late.
很抱歉我错过了他醒着的时候。我必须工作到很晚。
The best teacher one can have is necessity.
我们能得到的最好教师是“需要”。
Good morning.
早上好。