Once we run that command Scripting Guys will be gone and $a will be equal to this

再次，我们运行这个命令，Scripting Guys将会消失，$a将会等于以下内容

youdao

Why should people care? Because we need animals, and because once they are gone, there will never be any more.

为什么人们关心？因为我们需要动物，因为一旦他们消失了，永远不会有任何更多。

youdao

We had gone through this once before last year with another one of our cockers. That experience really hurt me when the puppy died and I had to bury it.

前年我们也曾有过一次这样的经历，发生在我们的另一只可卡犬上。

youdao

"We have gone through turmoil. We have gone through civil war, and we have come out stronger, and we will do so once more."

VOA: standard.2010.05.22

Once the redundancy money and my savings are gone, we will be really stuck.

BBC: Out of work: Your stories

On the other hand, other people would say, well, you know, once it's gone, it's gone and we'll never get it back.

NPR: Should Detroit Bail Out By Selling Van Gogh?

My mother once had a jar of change stolen when I was child, and without our small network of friends we would have gone without food entirely.

NPR: Child Hunger: Nutritious Food Tough To Afford