gold bump

基本解釋

They used the cloak to conceal a small bump on a gold surface -- a bit like hiding a small object underneath a carpet and then making both the bump and the carpet invisible.
研究人員使用隱形斗篷來掩蓋黃金表面的一個小凸起，其原理就如同將一個小物體隱藏在地毯下，然后再使這個凸起和地毯都隱形。

Perhaps the inflation surge that is coming will look more like the third inflation speed bump where adding gold and real estate significantly lowered returns and increased downside risk.
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Gold stocks also have a history of performing well when the U.S. economy hits a bump in the road.
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