But what is a ppa and why would you want to use one ?

不过，ppa指的是什么以及为什么你会希望使用它呢？

A ppa official said : " there has been double-digit growth in the past four years in cargoes for the black sea , which has accounted for most of the increase in demand for capacity at mediterranean ports . "

比雷埃夫斯港务局的一位官员表示：“过去四年中，黑海地区的货运一直以两位数的速度增长，这是地中海港口吞吐需求增加的主要原因。”

Please note that this is a pre-alpha release as I 'm the only one who 's ever used y ppa manager so far .

请注意，这只是一个初期测试版本，而且目前只有我一个人用过yppa管理器。

I haven 't added progress bars to y ppa manager as I find them useless .

我没有给yppa管理器添加进度条，我觉得没什么用。

It 's also not a cert to make it into firefox 4 for linux , nevertheless if you want to play with it whilst you can you 'll find it in the mozilla daily build ppa .

它还未被确定是否最终加入到linux版本的火狐4中，但如果你想用它玩玩，你可以在mozilla的dailybuildppa源中获取更新。