You can swap out one system and replace it with another.

您可以交换一个系统并且用其它的系统替换它。

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You could even swap out the batteries while charging others with the phone.

你甚至可以更换出有电的电池，装入没电的电池，用手机太阳能给没电的电池充电。

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And during live shows, guitarists may swap out for a new guitar with every song.

而在现场表演时，吉他手有可能为每首曲子的演出而更换一把新吉他。

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Game publishers who survive the first couple years of the console swap-out may do awfully well.

FORBES: Magazine Article

The primary upgrade outside of the OS is a swap-out of that frankly mediocre Super AMOLED screen of the original RAZR smartphone for a much nicer ColorBoost LCD -- sorry, ColourBoost.

ENGADGET: Motorola RAZR V goes on sale at Bell, gives Canadians a thin slice of Ice Cream Sandwich

While Yahoo has for years been grappling to remain relevant with fast-moving consumer tastes, who knows if the swap-out will lead to a better awareness of how its users interact with technology, not to mention more motivated staff.

FORBES: Bye Bye BlackBerry, Hello iPhone 5: Yahoo! Offers Every Employee A New Smartphone