To be honest I have not used Xcode 3 for months so I will not miss it but if you have a reason why you need to remain with Xcode 3 you should probably avoid upgrading to Lion.

老实说，我已经几个月没有用x code 3了，因此我对它倒没有什么留恋的，但是如果你有理由要保留X code 3的话，那就应该尽量避免升级到Lion。

youdao

The lion crouched ready to pounce.

狮子蹲下身，准备猛扑。

《牛津词典》

The lion crouched ready to strike.

狮子蹲身准备袭击。

《牛津词典》

He rode that mountain lion all the way to the camp of the Hell's Gate Gang.

VOA: special.2009.11.28

To the lion it is the lioness which is made to be loved; to the bear the she-bear.

雄狮在雌狮面前,陷入爱情;,公熊会在母熊面前这样。

耶鲁公开课 - 心理学导论课程节选

And that can be a good thing-- you know, a lion comes to and charges me, "I don't want to start thinking about my MAPP application.

那可能是件好事-,一头狮子朝我冲过来，我不想考虑宾州大学硕士申请的事。

哈佛公开课 - 幸福课课程节选

The much more serious point is that no one really knows why the move from Snow Leopard to Lion caused such loss of battery life.

FORBES: Mountain Lion Kills Battery Life Like Lion Did

Some say downgrading to Lion has brought battery life back to its earlier levels, though Apple has now removed Lion from the Mac App Store.

FORBES: Links 7 August: Apple's Mountain Lion Battery Problems Edition

Wolf doesn't know how much the park's owners paid for Little Mama, who was certainly no baby when she came to Lion Country Safari 45 years ago.

CNN: Meet one of the oldest chimpanzees in captivity