Trichalcite
丝砷铜矿
🗣️ 情景例句
And I wonder if there are some balcony seats still available.
不知道还有没有包厢的位子？
If he doesn't, will you buy one?
如果他不，你会买一个吗？
In 1975, a primitive machine called the Altair, was launched in the USA.
1975年，美国推出了一台被称为“牛郎星”的原始机型。