What do you think will happen if we take the copper-bottom pot out of the tub and use a single penny instead?

如果我们将铜底锅从盆中取出而使用一个硬币代替，您认为会发生什么情况？

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The gold, detached from the copper, forms a sediment at the bottom of the cell.

针脚里的铜溶解之后与金分离，金沉淀在电解池底部。

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Strong heavy devices called bolts held the ship's bottom together. These bolts were made of copper.

坚固的螺钉把船底连接到一起，这种螺钉用铜制成。

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After World War II Lowe's became known hundreds of miles around for rock-bottom prices on nails, copper pipe and lumber by the railcar-load.

FORBES: Merchant Princes

Copper bulls have the slight overall near-term technical advantage and a bullish double-bottom reversal pattern has formed on the daily bar chart.

FORBES: Comex Gold Ends Higher on Bargain Hunting, Safe-Haven Demand; FOMC Results A Non-Event

Copper bulls still have the slight overall near-term technical advantage and a bullish double-bottom reversal pattern has formed on the daily bar chart.

FORBES: Comex Gold Ends Slightly Lower But Well Off Daily Low On Bargain Hunting