Exactly. If they had the choice to opt out, they would opt out in a heartbeat.

没错。如果他们可以选择退课，那他们可能会马上退选这门课。

They'd likely betray you in a heartbeat.

他们很可能会瞬间背叛你。

But I would do it again, in a heartbeat.

但若重来 我还会毫不犹豫地那样做。

I would have exposed myself as an addict in a heartbeat.

我绝对眼都不眨地承认我是个瘾君子。

I'm sure Madam Pomfrey will fix it in a heartbeat.

庞弗雷夫人肯定一下子就能治好。

Here are some examples: She accepted the new job in a heartbeat.

她立刻接受了新工作。

We say something happens in the blink of an eye or in a heartbeat.

比如" 眨眼间或心跳的瞬间发生某事（in the blink of an eye or in a heartbeat）" 。

I love movies! As soon as you texted, I responded in a heartbeat.

我喜欢电影！你一发短信，我就立刻回复了。

Peter looked up at Happy, and in a heartbeat, Happy knew what had just happened.

彼得抬头看向哈皮，哈皮瞬间就明白发生了什么。

" I've never trusted Littlefinger. For enough coin, he'd go over to Stannis in a heartbeat" .

" 我从不信任小指头。只要对方出价够高，他转眼间就会改换门庭。"

And your treatment plan is based on...cuteness? If she were an 80-year-old man, you'd amputate in a heartbeat.

你的治疗方案是建立在...可爱？她若是年过八旬，你会立刻给她截肢。

I am surrounded by gunslinger kids who'd steal this job in a heartbeat if they weren't a little scared of me.

我周围是一帮虎视眈眈的年轻人 若不是还有些怕我他们随时可能抢走我宝座。

But then I found out who I did have to wrestle, and I would have traded for Benny Wells in a heartbeat.

可是当我知道谁来当我的对手时，我马上就改变主意了，我宁可选班尼·威尔斯。

Ah, Estonian castle in a heartbeat I think.

啊，我觉得爱沙尼亚城堡令人心跳不已。

And I'd do it again in a heartbeat.

我会毫不犹豫地再做一次。

He’ll get it thrown out of court in a heartbeat.

他会立刻把它扔出法庭。

He'll get it thrown out of court in a heartbeat.

他会立刻把它扔出法庭。

You would choose Snart in a heartbeat.

你会毫不犹豫地选择史纳特。

Let's start with " in a heartbeat" (heartbeat).

让我们从“in a heartbeat”（心跳）说起。

It was awesome and I would do it again in a heartbeat.

太棒了，我会立刻再做一次。