trouble有两种词性，名词与动词。 作名词时，又分为可数与不可数。大部分时候是不可数的。而troubles则是名词的不可数形式。
拓展资料
1、[U, C] ~ (with sb/sth)
问题；忧虑；困难；苦恼
a problem, worry, difficulty, etc. or a situation causing this
We have trouble getting staff.
我们在招聘雇员方面有困难。
He could make trouble for me if he wanted to.
他要是想找麻烦就能给我找麻烦。
The trouble with you is you don't really want to work.
你的问题在于你并不是很想工作。
Her trouble is she's incapable of making a decision.
她的问题是自己没有能力作决定。
The trouble is (= what is difficult is) there aren't any trains at that time.
麻烦的是当时没有火车。
The only trouble is we won't be here then.
唯一的麻烦是到那时我们就不在这儿了。
No, I don't know his number─I have quite enough trouble remembering my own.
不，我不知道他的号码，我光记自己的号码就够困难的了。
We've never had much trouble with vandals around here.
我们这一带从来没有多少破坏公物的问题。
financial troubles
财政困难
She was on the phone for an hour telling me her troubles.
她在电话上用了一个小时向我倾诉她的种种烦恼。
Our troubles aren't over yet.
我们的麻烦还没有完呢。
see also teething troubles
疾病；疼痛 illness/pain
2、[U] 疾病；疼痛
illness or pain
back trouble
背痛
I've been having trouble with my knee.
我一直膝盖痛。
note at illness
机器 with machine
3、[U] （机器、车辆等的）故障
something that is wrong with a machine, vehicle, etc.
mechanical trouble
机械故障
困难 / 暴力局面 difficult/violent situation
4、[U] 困境；险境；可能受到批评（或处罚）的情形
a situation that is difficult or dangerous; a situation in which you can be criticized or punished
The company ran into trouble early on, when a major order was cancelled.
这家公司早些时候有一个大订单被撤销，因此陷入了困境。
A yachtsman got into trouble off the coast and had to be rescued.
一个驾驶帆船的人在海上遇险需要救援。
If I don't get this finished in time, I'll be in trouble .
我如不按时把这完成就要倒霉了。
He's in trouble with the police.
他犯事落入了警察的手里。
My brother was always getting me into trouble with my parents.
以前我弟弟经常连累我遭父母的责难。
5、[U] 纷争；动乱；骚乱
an angry or violent situation
The police were expecting trouble after the match.
警方预料比赛后会有骚乱。
If you're not in by midnight, there'll be trouble (= I'll be very angry) .
你要是半夜前不回家，我就让你有好戏看。
He had to throw out a few drunks who were causing trouble in the bar.
他不得不轰走几个在酒吧里闹事的醉鬼。
troubles
1、N-UNCOUNT 麻烦;困难;问题
You can refer to problems or difficulties as trouble .
I had trouble parking...
我停车有困难。
2、N-SING 麻烦;问题;引起麻烦的事
If you say that one aspect of a situation is the trouble, you mean that it is the aspect which is causing problems or making the situation unsatisfactory.
The trouble is that these restrictions have remained while other things have changed...
问题是其他事情都变了，而这些条条框框还在。
3、N-PLURAL 苦恼;烦恼;忧虑
Your troubles are the things that you are worried about.
She tells me her troubles. I tell her mine?
我和她互相倾诉烦恼。
4、N-UNCOUNT 疾病;不适;疼痛
If you have kidney trouble or back trouble, for example, there is something wrong with your kidneys or your back.
An unsuitable bed is the most likely cause of back trouble?
不合适的床最有可能引起背部疼痛。
5、N-UNCOUNT 骚乱;动乱
If there is trouble somewhere, especially in a public place, there is fighting or rioting there.
Riot police are being deployed throughout the city to prevent any trouble...
正在全城部署防暴警察以防止发生骚乱。
6、N-UNCOUNT 费事;不便
If you tell someone that it is no trouble to do something for them, you are saying politely that you can or will do it, because it is easy or convenient for you.
It's no trouble at all; on the contrary, it will be a great pleasure to help you...
根本不费事，恰恰相反，非常荣幸能帮到你。
7、N-UNCOUNT 需劳神费力的人(或动物)
If you say that a person or animal is no trouble, you mean that they are very easy to look after.
My little grandson is no trouble at all, but his 6-year-old elder sister is rude and selfish.
我的小孙子一点都不让人操心，但是他6岁大的姐姐却野蛮而又自私。