pop-in point

Sit at home and mull over what mobile phone you should buy, waiting for the answer would pop in at some point.

坐在家里仔细考虑你该买什么手机，或是等待答案偶尔也会冒出一些想法。这样做也许会有用，也许永远也没办法。

But it does hold out the tantalising hope that, at some point in the future, it might be possible to pop a pill and put an extra decade or two on your life.

但雷帕霉素确实展现了一种希望，极具吸引力，即在未来的某个时刻，只要吃上一片药，就可能延长十年到二十年寿命。

You should see a pop-up menu with a list of elements that are valid at this point in the document, in this case the HTML element.

您应该看见一个弹出菜单，该菜单列出了文档中这个位置上有效的元素，在这种情况下是html元素。