But only once I'd implemented this — and it took a long time to do it, and we were very proud — but what I also realized is that we just made a better version of an existing system which was broken.

但是有一次我实现了这一点——花了我很长时间，我们感到非常自豪——但我也意识到，我们刚刚为一个已经崩溃现有系统做了一个更好版本。

That was long ago. maybe it only happened once.

那是很久以前了，也许就有那么一次。

Venting once means you're more likely to vent again.

发泄有一次和更多次。

Yeah, I've only ever had one bad burn.

目前我有一次严重烫伤经历。

The biggest lesson, I would say above all, she's always reminded me that we only have one life and that it's your job to fight for your happiness.

最重要是，她是提醒我，人生有一次，你该为自己幸福负责。

So at the moment, I've only got one long session per week.

所以目前，我每周有一次长时间习。

It happened one time and I wish it hadn't and it's over.

有一次 我真希望没发生过，但已经结束了。

They basically live one life, but as two completely different animals.

它们基本上有一次生命，但是活成了两种完全不同动物。

And on the Balkans, we have this one chance to keep this blue heart beating.

在巴尔干半岛，我们有一次机会让这颗蓝色心脏继续跳动。

Monocarpic plants have just one chance at this.

结一次果植物有一次机会。

One reader at a time could borrow each scanned book.

一次有一个读者可以借阅一本扫描书。

We got one shot at this, fellas.

我们有一次机会 伙计们。

For most people, being within range of a total eclipse is a once-in-a-lifetime event!

对于大多数人，能处在日全食范围内，是一生有一次珍贵体会！

So you've really only got one pop at each shot.

所以机会有一次。

And it's only after this cleansing that we have a world in which stuff dies.

有经过这样一次清洗，我们世界才会有死亡。

In his speech, the president departed from his text only once.

【depart】统讲话中有一次脱开了讲稿。

It came together to pass one in the -- one in a generation, once in a generation infrastructure law, building bridges connecting our nation and our people.

我们齐心协力通过了一代人有一次基础设施法，为我们国家和人民建立了桥梁。

When I embalmed my first body, it is kind of scary, kind of unnerving, because it's one of those things you have to do right the first time and you only get one chance.

当我对我第一具遗体进行防腐处理时，这有点可怕，有点令人不安，因为这是你第一次做切必须做对事情之一，你有一次机会。

Back when modern flooding records of Venice began in 1872, there was only one severe flooding event before 1950 in the city where the water reached a height of 1.4 meters above sea level.

早在 1872 年威尼斯现代洪水记录开始时，到 1950 年之前，这座城市有一次严重洪水事件，当时水位达到了海平面以上 1.4 米高度。

And for today's story, getting a 10 out of 10, Thanksgiving only comes once a year, but soon roller coaster enthusiasts may be able to get a dose of Thanksgiving gravy whenever they want.

今天满分新闻，感恩节一年有一次，但很快过山车爱好者们就可以随时享受感恩节肉汁了。