All is not gold that glitters.

闪光的东西不一定都是金子。

《新英汉大辞典》

There are not gold COINS about now.

目前没有金币在流通。

youdao

All that glitters is not gold, but it must have free electrons.

并非所有发光的都是金子，但是要发光必须有自由电子。

youdao

But I also tell my children that all that glitters is not gold.

VOA: special.2011.04.00

All that glitters is not gold, but it must have free electrons.

并非所有发光的都是金子，但是要发光必须有自由电子。

麻省理工公开课 - 固态化学导论课程节选

The goldsmith might also write notes promising so much gold and not promising the return of any particular item of gold.

这个金匠会写下票据,保证归还一定数量的金子,但是不保证归还某个特定的金器

耶鲁公开课 - 金融市场课程节选

In other words, they had U.S. dollars (actually Treasury bonds) as the reserve asset, not gold bullion.

FORBES: My Thoughts On Lewis Lehrman's Gold Standard

Emerging markets by and large have linked currency and monetary systems, though their link is to the dollar, not gold.

FORBES: Fiat Money Never Stays Golden Forever

Of course, when it comes to endorsement opportunities, not all gold medals--and for that matter, not all gold medalists--are created equal.

FORBES: Magazine Article