Venice could suffer more catastrophic floods before then.

在此之前，威尼斯可能遭受更大的洪水灾害。

" You have done this before, then" ?

" 你们以前这么干过？"

But before then, let's remember how we got here.

但在此之前，让我们来回顾一下我们是这么到今天的。

Do we make any stops before then?

到目的地之前还停吗？

" You should have seen him before, then" .

" 那你应该看看他以前的样子。"

So this history rouses two questions, who woke people before then?

那么回顾历史，你可能会问，在那之前是什么叫醒人们起床呢？

Before then, I had never heard classical music.

在那之前，我从未听过古典音乐。

Before then, women were not allowed to vote.

在此之前，女性不能投票。

If you jump before then, you'll evaporate.

如果你在到站之前跳下去 你会瞬间蒸发。

The universe will have become uninhabitable, long before then.

还没到那个时候，宇宙已经无法使人类居住了。

And before then there weren't even any plants.

再往前，那时连植物也没有。

Officials hope smoking will disappear many years before then.

官员们希望在那之前很多年就没人吸烟了。

What hast thou then more than thou hadst before?

且看你是否比从前多添了朋俦？

However, the theater world wants to get going before then.

然而，戏剧界想在那之前" 复苏" 。

Before then, it's only tested on smaller more limited groups.

在此之前，疫苗只在较小范围的有限数量群体中进行测试。

I wouldn't recommend waiting. What if you die before then?

我不建议等待, 如果你在那之前就死了呢?

But the struggle had been going for some time before then.

但在此之前，反歧视斗争已经持续了一段时间。

But New Zealand health officials hope smoking will decrease well before then.

但是新西兰卫生官员希望在那之前吸烟就会减少。

Anything which is not carefully removed before then will be lost forever.

在那之前没有被妥善搬走的东西将不复存在。

But what are we going to do to kill time before then?

但是在那之前我们要做些什么来消磨时间呢？