One day, Jenny picked up a piece of gold.

有一天，珍妮捡到了一块金子。

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One day he saw a piece of gold on the road.

一天，他在路上看到一块金子。

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When Ali Baba's wife brought it back, she found a piece of gold sticking to the bottom.

当阿里巴巴的太太把秤斗拿回来还时，凯辛的太太发现一小块金子粘在秤斗的底部。

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You can put your hands through a hole in a clear, plastic box and hold the huge piece of gold.

VOA: special.2010.03.22

So you can imagine, we actually don't need to think of it as a piece of gold foil it might be easier to think of it as a couple of layers of atoms.

所以可以想象,我们不用把它当成一片金箔,只要把它当成是几层原子,所以他所作的就是。

麻省理工公开课 - 化学原理课程节选

The easiest way to make an investment is to buy a piece of gold - a hard asset that can be stored at home.

CNN: India spent $56 billion for their gold?

If you want a piece of the gold business downstream, you always can buy stock in the nation's largest gold merchant: Wal-Mart.

FORBES: Magazine Article

For instance, electroplating can be used to coat a thin layer of gold on to a cheap piece of material.

ECONOMIST: MONITOR