I must pop off now, or I'll be late.

我得赶紧走，要不就迟了。

I must pop off now.

我现在该走了。

And then, in theory, new universes pop off.

最后，理论上，新的宇宙脱离。

I have to pop off for a quick trip to the toilet.

我要马上离开去一下洗手间。

Those variables pop off the stack when their containing function is complete.

当其所包含的函数完成后，这些变量将从堆栈中弹出。