0 a common metal, such as lead, tin, or copper, that reacts easily with other chemicals and is not a precious metal -- 賤金屬（如鉛、錫、銅）
Every country where there is a base metal mining industry provides substantial incentives.
I believe it is right that the base metal should be indicated in some way.
For instance, we have been appealing for over twenty years for a more enlightened policy to encourage base metal mining.
Surely it would be a great economy to the country if this coinage were made entirely of some base metal.
In addition to circulating versions of the coin, collectors' version will be issued in base metal, silver and gold.
What explains this miraculous transformation from base metal to gold?
It is crazy to have goods costing three times as much as in 1938 and the base metal being valued at only twice as much.
Was it done by putting base metal in?
