Polymetallic
多金属的
🗣️ 情景例句
In the Spring and Autumn period, copper and iron chopsticks came into being.
在春秋时代又出现了铜制和铁制的筷子。
It's nothing to get upset about.
没什么，用不着烦恼。
We are so familiar with the fact that man ages,
我们对人总是要衰老的现象并不陌生，