真的金礦
這一支就是核心畫面本身：一個真實的、挖得到金子的地方。其他用法都是把這個畫面搬到別的東西上面。
noun · B1
A place where gold is dug out of the ground, usually a deep hole or a set of tunnels where workers cut gold out of the rock.
金礦；金礦場
核心畫面
Picture a hole cut deep into a , with tunnels running off it and gold sitting in the rock. You put a shovel in, and what comes out is money. That one picture carries the whole word. Point it at a business and you get a place where money keeps coming out. Put a person on top of it, unaware, and you get someone who owns far more than they think.
可以想成一個往山裡挖進去的深坑。坑裡有坑道，石頭裡卡著金子。鏟子挖下去，挖出來的就是錢。這個字的每個用法，都從這一個…更多收起
可以想成一個往山裡挖進去的深坑。坑裡有坑道，石頭裡卡著金子。鏟子挖下去，挖出來的就是錢。這個字的每個用法，都從這一個畫面走出來。把它指向一門生意，就成了「錢一直挖得出來的地方」。讓一個人坐在坑的上面而不自知，就成了「手上很值錢卻沒發現」。Two branches
比喻：一直挖得出錢的東西
把礦坑的畫面搬到生意上：不是真的挖金子，而是錢一直進來。兩個意思共用的是「這個地方一直產出價值」這件事。
noun · B2
A business, product or activity that brings in a lot of money, often much more than anyone expected.
金礦；搖錢樹