First, we should plant trees.

首先，我们要种树。

youdao

First, we should protect the bamboo forests.

首先，我们应该保护竹林。

youdao

First, we should seldom go out.

首先，我们应该少出门。

youdao

"It is been a tough journey, first,just to convince people that we should be regarded as serious candidates.

VOA: standard.2010.06.07

We know, from the very first lesson of the class last time, that no one should choose these strategies.

从上堂课中,我们学到了,不要采用这类策略

耶鲁公开课 - 博弈论课程节选

So first thing we should do is scratch our heads and see what's going on here. Alright, let's look at it. What's happening here?

所以我们要做的第一件事,就是抓抓脑袋看看发生了什么,好了，让我们来看看，这儿发生了什么呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

I'll say a few more words about that in a minute, but first we should savour the symbolism of the fact that the government will not be eliminating the target measure of the deficit in the lifetime of the parliament.

BBC: Mr Osborne's unwelcome statement

First, we should make sure that no one is taking advantage of consumers at the pump.

WHITEHOUSE: Weekly Address: Expanding Responsible Oil Production in America | The White House

First, we should make sure to put most of the blame on Congress.

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