gold-mine
n.
late 15c., "place where gold is dug out of the earth," from gold, n. + mine, n.. Figurative use "anything productive of great wealth" is by 1882.
| 词汇 | gold-mine |
| 词根词缀 | Online Etymology Dictionary gold-mine n. late 15c., "place where gold is dug out of the earth," from gold, n. + mine, n.. Figurative use "anything productive of great wealth" is by 1882. |
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