No life had been more peaceful and innocent than mine; few lives so rich with benefits conferred.

谁也比不上我生活得那样平和，那样纯真；很少有人象我那样生活得富于裨益。

youdao

A glacier next to a nearby zinc and lead mine has retreated since the site closed in 1990, exposing an outcrop of metal-rich ore, where drilling will start again soon.

一座铅锌矿在1990年关闭后，周围的冰川就不断缩小，暴露出金属含量丰富的矿石，因此钻井工作将会很快开始。

youdao

Regard man as a mine rich in gems of inestimable value. Education can, alone, cause it to reveal its treasures, and enable mankind to benefit therefrom.

人可比喻作一个丰富的矿藏，蕴藏着不可估量的宝石。唯有教育能使之显露出来，使人类获得裨益。

youdao

Friedland calls it "the treasure chest, " and claims it contains perhaps as much copper as Falconbridge's rich Collahuasi mine in Chile.

FORBES: Magazine Article

Then just ten years ago, 190 miles north of Yellowknife, a determined and then obscure Canadian geologist, Charles Fipke, found the rich Diavik mine, vaulting Canada from irrelevant to third-largest supplier of diamonds, after Africa (again) and Russia.

FORBES: Magnetic North: The Canadian (Mining) Miracle

There is a rich vein to mine here for GOP nominee Mitt Romney.

WSJ: Strassel: Obama's Imperial Presidency