Chalcotype
铜面浮雕术
🗣️ 情景例句
He is still unable to express himself in English.
他仍然不能用英语表达自己的意思。
Did you phone him yourself?
你自己亲自打电话给他吗？
Rescue workers are therefore drilling a hole on the north side of the mine.
因此，营救人员在矿井的北侧钻了一个洞。