I guess right now you've got the last laugh

我想你现在应该笑不出来了吧

right now adv.立刻；马上；就在此刻

例句：

Do it right now.

现在马上做。

Truly I ain't got no business here

说真的 这里发生的事情跟我一点关系都没有

ain't=are not, am not, is not,=has not, have not

But really I would rather be at home all by myself

但其实我更愿意一个人呆在家里

would rather宁可； 宁愿

例句：

I would rather be laughed at than quarrel with him.

我宁愿被嘲笑，也不愿和他吵架。

Not in this roomwith people who don't even care about my well-being

而不是在这个拥挤的房子里 这群人根本不在乎我的感受

care about关心

例句：

Don't youcare about this country's future?

难道你不为国家前途担忧吗?

Under clouds ofmarijuana

处于烟雾缭绕的笼罩之下

Marijuanan.大麻

例句：

He wasbusted for possession of marijuana.

他因怀有大麻而被捕。

Over this music I don'tlisten to

这里嘈杂的音乐又不合我的口味

listen to听

例句：

It is a waste of time to listen to his insignificant talk.

听他那些废话纯属浪费时间。

And I don't wanna get with you

而且我才不想搭理你

get with开始做； 着手做； 对... 注意

例句：

The teacher told the students to get with it.

老师要求学生们注意听讲。