Platinirdium
铂铱矿
🗣️ 情景例句
She never spoke about her private life.
她从未谈过她的私生活。
What do economists say about the present crisis?
经济学家们对于现在的危机做何说法？
of the nature of the illness from which his friend was suffering,
不知道他的朋友得的是什么病，