Pleonectite
聚族礦
??? 情景例句
I don't know.
我不知道。
What a gossip!
搬弄是非！
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.
美國自1830年起，加拿大從1870年左右起，殖民者開始向西遷移，并把平原據(jù)為己有。