"mother lode" in Chinese (Traditional)
主礦脈最大來源
Definition
某事物的最主要或最豐富的來源；最初指礦井中最大的金銀礦脈，如今用來指任何重要的價值或供應來源。
Usage Notes (Chinese (Traditional))
現今主要是比喻用法，通常用“of”來說明來源，例如“the mother lode of ideas”。最初為採礦術語，如今指任何大量、有價值的來源。
Examples
They discovered the mother lode of gold deep in the mountain.
他們在山裡深處發現了金子的**主礦脈**。
That library is the mother lode of historical documents.
那個圖書館是歷史文獻的**最大來源**。
We hit the mother lode with our new app—so many downloads!
我們的新應用迎來了**主礦脈**，下載量非常大！
When she searched online, she found the mother lode of recipes for chocolate cake.
她在網上一搜，就發現了巧克力蛋糕的**主礦脈**配方。
This archive is the mother lode if you want rare photographs.
如果你想要稀有照片，這個檔案館是**主礦脈**。
We thought we'd just find a few old toys, but the attic was a real mother lode!
我們以為只會找到幾件舊玩具，沒想到閣樓是個真正的**主礦脈**！