Polymetallic
多金属的
🗣️ 情景例句
The rural workforce has been flowing in to the cities ever since the open door policy was adopted.
自从改革开放政策实施以来，农付劳动力正不断流向城市。
To speak to the public
向公众呼吁
The most unusual car was a Benz which had only three wheels.
而最不寻常的一辆则要属只有3只轮子的奔驰牌汽车了。