One at a time means first one person and then another.

一次一人是指一人先说，另一人后说。

It will be the first trip where I actually plan the whole trip by myself. Yeah.

这是我第一次一人计划整旅行。

Anna, what's the first thing you notice about someone when you first meet them?

Anna，你第一次见到一人最先注意的事情是什么？

One person at a time, but it will do it.

一次一人， 但它会做到。

It happened to one of my friends on her first date with an American guy.

我的一友第一次和一美国人约会就发生了这样的事。

It wouldn’t be the first time a man has been left dangling with life still him in.

这不会是第一次一人被扔在悬崖边， 他还活着。

Now, the phenakistiscope was cool, but only one person could watch at a time.

现在，费那镜很酷，但一次只能一人观看。

It can mean relating to one person at a time or designed for only one person at a time.

它可以意味着一次与一人有关，也可以一次只为一人设计。

This possibility doesn’t apply to one person at one time.

这种可能性一次不适用于一人。

Eh, but I wanted us all to sneak in one at a time and make the plan stupid elaborate.

嗯，但我想让我们一次一人潜入， 把计划搞得一团糟。

I don't like getting advice from more than one person at a time.

我不喜欢一次从不止一人那里得到建议。

Like one time this guy was like, This is my seat.

有一次， 一人说，这是我的座位。

(Laughter) Yes, leaving me once again alone.

（笑声） 是的，又一次让我一人呆着。

Now I was doing Skype-coaching at the time but that was just one person at a time.

现在我当时正在做 Skype 教练，但一次只有一人。

Okay! Okay! Let me try it again, you're gonna wanna date this next guy, I swear!

再试一次 下一人你一定喜欢！

Yeah, and I think you learn a lot about a person on a first date.

就是嘛 第一次约会能了解一人好多呢。

The " turnstile" is a small device or machine that allows one person to go through at a time.

“十字转门”是一种小型设备或机器，一次允许一人通过。

Change happens one person at a time, one act at a time, one word at a time.

改变一次发生在一人身上，一次发生在一行动上，一次发生在一词上。

For the first time in my life, I had put a photograph above the well-being of a person.

我有生以来第一次将照片置于一人的幸福之上。

This will allow me to call on people one at a time and avoid having people talk over each other.

这样我就可以一次拜访一人，避免人们互相议论。