Kolm
铀煤页岩, 柯姆煤(Ronnuma地方产的富氢煤)
🗣️ 情景例句
Did you remember your other appointment for today?
还记得今天的另一个约会吗？
Who is the auther of this essay?
谁是这论文的作者？
What makes you say so?
你怎么这么说？