This release represents a major upgrade of the chat application in Zoho.

此次更新版本的发布象征着Zoho聊天应用的一次重大升级。

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You can now get Firefox 8, which Mozilla has made very clear is a major upgrade of the browser.

你现在可以获得Firefox8，很明显这是Mozilla对该浏览器做的一个主要的升级。

youdao

The new Events section is a major upgrade from the previous version, both in appearance and functionality.

新的事件区在外观和功能上都做了重大的更新。

youdao

The computer company lets loose its first major upgrade for OS X--and it has teeth.

FORBES: Magazine Article

Then there is HTML5, a major upgrade of the basic software code for the World Wide Web.

FORBES: How to Slow the Wireless Juggernaut

No question that Mr. Nash is a major upgrade compared to anything the Lakers have had at point guard.

FORBES: Evaluating The Business Side of Steve Nash's Sign and Trade to the Los Angeles Lakers