The later versions are all backward-compatible with earlier versions.

更新的版本都是向下兼容的。

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Python V3.0 is not backward-compatible with earlier versions, and it appears that V2.6 is the version most commonly in use.

Python V3.0并不能向后兼容之前的版本，而且V2.6是使用最为广泛的版本。

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In the publisher policy assembly, specify that your new satellite assembly is backward-compatible with its previous version.

在发行者原则组件中，要指定您的新附属组件与它的先前版本为回溯相容。

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And all of a sudden your relatively old refrigerator or air conditioner doesn't work because the new operating system isn't backward-compatible with the systems in these devices.

CNN: Home, sweet networked home

The Aircell Smartphone will be backward-compatible with all Aircell Axxess communications systems currently in production, and available as a drop-in replacement for the company's prolific Aircell Axxess flush-mount handset.

ENGADGET: Aircell announces world's first 'airborne smartphone'

Options for the new machines will include Apple's new wireless-networking technology, Airport Extreme, which supports speeds of 54 megabits per second and is also backward-compatible with standard Wi-Fi gear.

FORBES: Magazine Article