last forever

基本解释

The worry is that such appetite for risk may not last forever.
令人担忧的是这样对风险的偏好可能不会永远持续。
When I was buying defaulted loans in the '90s, I knew the opportunity would not last forever.
当我在90年代买下不能偿还的债时，我知道这个商机不会永远持续下去。
One thing it means is that the high valuations startups are presently getting may not last forever.
它意味着的一件事是，创业公司们目前所得到的高估值可能并不会永远持续。

Life was like a dream. But like any dream, it could not last forever.
I mean, they last forever. You can keep them on for... like a month or something. Yeah, it's awesome.So, yeah.
它们可以维持很久。你可以把他们留在阅读器里，长达一个月。是的，太棒了，嗯。
我的爱好是读书 - SpeakingMax英语口语达人
The cookies were going back and forth and back and forth and the hearts up and down, well, this thing that we had that called a loop last week with a forever block with a statement inside of it is simply gonna look a little something like this.
这些饼干人来来回回的移动,还有这些爱心们上上下下地漂浮,都用到我们上周提到过的循环结构,当然还有个声明在里面，就有点像屏幕上,显示的这样。
哈佛公开课 - 计算机科学课程节选

Just when people start thinking they'll last forever, the phases are ready to change.
FORBES: Dow Jones Interactive