forward compatible

基本解釋

It’s both backwards and forward compatible, though at the loss of some convenience.
它既向下兼容又向上兼容，當然向上兼容的時候有些不方便。
Ext4 is forward compatible in that you can mount an ext3 file system as an ext4 file system.
ext4 與 ext3 是向前兼容的，這樣就可以將 ext3 文件系統(tǒng)掛載為 ext4 文件系統(tǒng)。
Because of the importance and difficulty in achieving forward compatibility, one of the major goals in XML Schema 1.1 is to make it easy to write forward compatible schemas.
由于獲得向前兼容性很重要，也比較困難，所以 XML Schema 1.1 中的主要目標之一就是讓編寫向前兼容的模式更為容易。

Uhrman assured us that "all the games will be backward compatible" going forward.
ENGADGET
Players are encouraged to forward the game to friends to look for compatible travel pals.
FORBES: You Play, They Win
Budding filmmakers might reasonably prefer to shoot their low-budget masterpieces in a snappy forward-looking format instead of a fuzzy one compatible with a 50-year-old TV.
FORBES: Pixel-Packin' Camcorder