degrade gracefully

基本解釋

HTML 5 was explicitly designed to degrade gracefully in browsers that don't support it.
HTML 5 的設(shè)計(jì)原則就是在不支持它的瀏覽器中能夠平穩(wěn)地退化。
Most of the time, you want to degrade gracefully or return a polite message to the user.
大多數(shù)情況下，您要柔和或有禮貌的消息返廻給用戶(hù)。
If this is done well, earlier versions of applications can even degrade relatively gracefully when they read newer saved documents -- usually by just ignoring unfamiliar tags and attributes.
如果做得好，應(yīng)用程序的早期版本在讀取較新的保存文檔時(shí)甚至可以相對(duì)溫婉地降級(jí)使用——通常衹需要忽略不能識(shí)別的標(biāo)簽和屬性。