This ancient fossil was a scientific gold mine.

这个古老化石是科学上金矿。

The king's wealth came from gold mines.

国王财富来自金矿。

Silver mines, gold mines, tin mines.

银矿、金矿、锡矿。

For the South, cotton is a gold mine.

对南方来说 棉花就是金矿。

But social media are no gold mine for do-gooders.

但是社交媒体并非好心金库。

After trying hard, I got a job in a gold mine.

几经周折，我才在一家金矿找到一份工。

And today that ancient tartar is a gold mine for archaeologists.

而现在，古代牙石对考古学家来说就是“金矿”。

An estimated 20,000 children work in Burkina Faso's gold mines.

估计有20000名儿童在布基纳法索金矿工。

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

AN12 飞机上九吨黄金属于一家金矿公司。

He says that in the beginning Nile Perch fishing was like a gold mine.

他表示，一开始捕捞尼罗河鲈鱼就像是金矿。

We start to understand that sleep is a gold mine for understanding our health.

我们开始明白，睡眠是了解我们身体状况重要来源。

A chemical explosion at a small-scale gold mine in Burkina Faso killed 59 people.

布基纳法索一座小规模金矿发生化学爆炸，造成59死亡。

Gore knew this satellite imagery would be a gold mine for civilian environmental scientists.

戈尔知道这张卫星图像将是平民环境科学家金矿。

The airport is often used to ship gold mined in the province of Ontario.

这个机场经常运输安略省开采黄金。

And of course, for an entomologist like me, it's a veritable gold mine.

而且当然对于像我这样昆虫学家这里是货真价实金矿。

Q 1: What happened at one of Australia's largest gold mines?

问题 1：澳利亚最金矿之一发生了什么？

The convoy was carrying workers at a gold mine owned by the Canadian company, Semafo.

车队上工所开采金矿是加拿公司西非采矿公司（Semafo）所有。

But for archaeologists, such gum-as long as it's really old-is a genetic gold mine.

但对考古学家来说，只要这种口香糖真古老，那它就是“基因金矿”。

The stay-away was total at the Kinross gold mine where last month's disaster occurred.

上个月灾害发生时，外出工工都在金罗斯金矿。

He lives near the gold mines and complains about the latest raid by the state controllers.

他住在金矿附近，对政府控制员最近突袭表示不满。