Cheleutite
砷铋钴矿
🗣️ 情景例句
I'm an exchange student.
我是一名交换学生。
The voice of the people is the voice of God.
人民之声力大无比。
From 1830 onwards in the USA and from about 1870 in Canada, settlers began to move westwards and to take possession of the plains as their own.
美国自1830年起，加拿大从1870年左右起，殖民者开始向西迁移，并把平原据为己有。