我早就知道了

I'm fully(well) aware of that

You don't have to tell me

I wasn't born yesterday

我认输了

Beats me

You got me

You got that right

I can't hack¹ this

(hack 是完成任务的俗语)

你到底要说什么？

Don't beat around the bush

Get to the point

What are you try to say?

你以为你是谁？

who do you think you are?

have an ace² in your hand (British)

have an ace in the hole(American)

握有王牌,很有把握

When you have the ace in your hand,you have something which you can use to gain an advantage when you need it.

have an ace in the hole(American)

a class act

（在运动或演艺方面）很出色的人

I have been tracking Neil for a year,he is a class act and I have got a lot respect for his ability.

我已跟踪尼尔一年，他是个出色的家伙，我很崇拜他的能力。

break one’s back

努力地工作

When you’re breaking your back to make an enterprise work,it’s going to cut into your time with family.

当你全身心投入工作的时候，回侵占到家庭生活的时间。

get someone’s back up (American)

put someone’s back up (British)

激怒某人

What does get my back up is a girlfriend who gets too jealous if someone else finds me attractive.