Add luster to the doors is to visit friends.

为门庭增添光彩的是来做客的朋友。

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The deeds of heroes add luster to a nation's history.

英雄的事迹能增加一个国家历史的光辉。

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The deeds or heroes add luster to a nation's history.

英雄的事迹能增加一个国家历史的光辉。

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Apple also hopes to add luster to a business line that has momentum but little market share.

WSJ: Tim Cook: Apple to Bring iPhone, iPad Features to Mac With Mountain Lion

It comes as no surprise, therefore, that investors around the globe have been reaching for the shinning metal to add some luster to their portfolio sending its price soaring.

FORBES: Investing in Gold: An irrational exuberance?

In 1990, when GM initially invested in Saab, the thinking was that GM could help improve Saab's quality and overall refinement, while the Swedish brand would add some luster to GM's generally dull product portfolio.

CNN: The fate of four GM brands