Pentaborate
五硼酸盐
🗣️ 情景例句
Please get me a cup of coffee.
请给我倒一杯咖啡。
It was a real pleasure for me to do it.
我很乐意这样做。
This is my friend, Ann. Ann, this is Uncle Wang.
这是我的朋友安。安，这是王叔叔。