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And , indeed , it was nearly three hours on the tarmac before liftoff .

事实上飞机在停机坪上又等了近三个小时才终于起飞。

He explains that 2005 was the " liftoff " year for ipod sales , and for the installed base to grow beyond that would require a " massive " sales surge which is not happening .

他解释说2005年是ipod销售的“起飞年”，人们本以为紧随其后的ipod软件装机量的增长会带来一次“极为可观的”音乐销量大爆发，然而这并没有发生。

But what exactly will the throngs of onlookers see at liftoff ?

但是发射后，观众究竟能看到什么样的场景呢？

The rocket failed shortly after liftoff .

这枚火箭发射升空后不久就爆炸坠落了。

Liftoff time will be 1:36 a.m. tuesday .

飞船将于周二凌晨1点36分发射升空。