It's a good time to be a doer.

现在是做实干家的好时机。

So you could say that it introduces the doer of an action.

所以你可以说它引出了个动作的实施者。

I'm a doer and an action taker!

我是践行者和实干家！

I think Meredith and Cristina are doers.

我觉得 Meredith 和 Cristina 都是行动派。

So when you want to introduce the doer of an action in a passive sentence, use by.

所以当你想在被动句中个动作的实施者时，用 by。

They're a doer. That's where that word comes from.

他是个实干家。这就是这个词的来源。

I feel like it's a concentration of doers, creatives, multi-talented people.

我觉得这是实干家、创意者和多才多艺的人的集中。

We have to become more proactive, George. We have to become doers.

我要更加积极主动，George。我要做行动派。

And in the old world, there was this idea of thinkers and doers.

在陈旧的想法中，有种思想家和实干家的观念。

You hate joining anything with " group" connotations and are an observer rather than a doer.

你不喜欢加入任何团体组织，是个观察员而不是个实干家。

I like hearing from America's thinkers, doers and builders about their hopes for the next generation.

我喜欢听美国的思想家、实干家和建设者谈论他对下代的希望。

The result is everyone is missing this reality of a continent of doers, of creators, of builders.

其结果是，每个人都错过了这个由实干家、创造者和建设者组成的大陆的现实。

We end up being the observer, not being the doer.

我最终成为观察者，而不是行动者。

He's the thinker, I'm the doer.

他是思想者，我是行动者。

She is the subject form, it's the doer.

她是主体形式，是行动者。

They wouldn't put the doer in front of me.

他不会让行动干系人出现在我面前。

Now let's get those evil doers.

我去干翻那帮恶棍吧。

This means that it's not entirely clear who or what is the doer, and who or what is being done.

这意味着不完全清楚谁或什么是实施者，以及谁或正在做什么。

It can be as lofty as rooting out evil doers or as simple as getting treasure.

可以高大如铲除恶人，也可以简单如得宝。

Which means that if we're talking about someone who is the doer, then we say who.

这意味着如果我谈论的是做事的人，那么我就说谁。