淘金的英文：
panning (for precious metals)

参考例句：

During the California gold rush, men had a dog-eat-dog life.
在加利福尼亚淘金时期，人们互相争夺，不择手段。

They panned off the sand and dirt.
他们用淘金盘淘去砂泥。

He tried gold mining, pearling and fur trapping.
他尝试过淘金，采珍珠和猎兽皮。

What's happening here is not unlike gold rush.
这里正在发生的情况和淘金潮没什么两样。

"He tried gold mining, pearling and fur trapping."
"他尝试过淘金,采珍珠和猎兽皮。"

They had been working the stream for 10 days, but it hadn't panned out.
他们连续10天在这条小溪里淘金，但还没淘出金子。

panning是什么意思：
n. 平底锅；秤盘；牧羊神
v. 严厉批评，抨击；淘洗，淘金

This is a scale pan.
这是个秤盘。

What's the size of the pan?
这秤盘的尺寸多大？

They panned off the sand and dirt.
他们用淘金盘淘去砂泥。

precious是什么意思：
adj. 贵重的，宝贵的；珍爱的；十足的
n. 亲爱的人，宝贝

thus, semi-precious stones are not precious, by definition.
因此，就定义来说，半宝石并不算宝贵。

He is a precious miser.
他是个十足的吝啬鬼。

Overly precious or nice.
矫揉造作的或过于考究的

metals是什么意思：
n. 金属；金属制品；气质，勇气；重金属摇滚乐
adj. 金属制的

A hammer has a metal head and a wooden or metal handle.
锤子有个金属的头，一个木质的或金属的把柄。

Metals contract in cold weather.
金属在寒冷的天气里收缩。

The lye will eat through the metal.
碱液会腐蚀金属。