Klockmannite
六方硒铜矿, 蓝硒铜矿
🗣️ 情景例句
Would you please repeat your offer again?
能否再说一遍您的优惠？
The timid child would not leave his mother's side.
那个胆小的孩子不愿离开母亲。
I nearly forgot! It's Grandma's birthday next Thursday
我差点儿忘啦！下星期四是奶奶的生日。