A gold mine is not a bottomless pit, the gold runs out.

一个金矿不是无限的，黄金采光了。

《柯林斯英汉双解大词典》

Nine tons of gold on plane AN12 belonged to a gold mine company.

AN12 飞机上的九吨黄金属于一家金矿公司。

youdao

There was gold, pure virgin gold in that blessed kiss.

这个幸福的吻里有金子，纯洁的金子。

youdao

Throughout the territory - in the mountains, along the streams and rivers - thousands of people searched for gold.

VOA: special.2010.04.25

Everything -- gold, silver, diamonds, particles -- everything accelerates the same way in a gravitational field, due to this remarkable fact.

所有东西,金,银,钻石,粒子,所有东西,在引力场作用下都以相同的方式加速,原因就是这个显著的事实

耶鲁公开课 - 基础物理课程节选

Goldsmiths are people who work in gold; they make jewelry and gold -goldware and whatever -coffee urns.

金匠就是处理金子的人,他们制作珠宝和黄金,金器之类的东西,还有咖啡壶

耶鲁公开课 - 金融市场课程节选

Under the classical gold-coin standard (1717-1914) private banks and central banks alike issued currency convertible into a fixed weight of gold, with balance sheets consisting primarily of gold coins and short-term loans denominated in local (but gold-convertible) money.

FORBES: Gold, Reagan and the Reds: From Degraded Dollar to Downgraded Debt

The most important, in the United States and in most other countries, is a positive declaration that gold, and gold-based instruments (such as gold-based bank accounts and so forth) would be permitted for monetary usage, just as we use dollars or, for that matter, foreign currencies such as Canadian dollars or euros.

FORBES: My Day In Washington, Testifying Before Rep. Ron Paul

Japan's gold-selling boom could soon turn to gold-buying, analysts say, if policy makers succeed in their goal of ending 15 years of deflation and sparking a new round of inflation.

WSJ: Japanese Rush to Sell Gold as Price in Yen Jumps