- a cry of joy or satisfaction when one finds or discovers something我发现了！我找到了！
mass noun
- an alloy of copper and nickel used for electrical filament and resistance wire优铜, 尤里卡高电阻铜镍合金。
词源
early 17th cent.: from Greek heurēka 'I have found it' （from heuriskein 'find'）, said to have been uttered by Archimedes when he hit upon a method of determining the purity of gold. The noun dates from the early 20th cent.