1.at bottom 实际上，根本上；基本上
She’s a kind person at bottom.
He pretends to be very tough, but he’s a kind man at bottom.
2.at cost 按成本
All the goods were sold at cost.
I can spare you some, if you want, at cost.
3.at ease 安逸；自在；无拘无束
He is at ease about this matter.
I never feel at ease in his company.
He passed the test with ease.
4.at fault 有责任；有错误；有毛病
My memory was at fault.
She was not at fault; don’t blame her.
Nobody knew who was at fault for the train accident.
5.at hand 在身边，在附近，在不远处，即将到来
He lives close at hand.
Christmas was almost at hand.
6.at heart 在内心里，实际上
He is still young at heart.
I’m a country girl at heart.
7.at leisure 有空；从容地
He is seldom at leisure.
Marry in haste and repent at leisure.
8.at length 最后；详细地；充分地
At length the train arrived, forty minutes late.
He talked at length about his work and his family.
9.at liberty 有空的；自由的；随意的
He will be at liberty this evening.
You are now at liberty to leave any time.
10.at odds 不和，争吵，不一致
Those two have been at odds (with one another) for ages.
He and his wife are always at odds about some small things.
This new evidence is at odds with their earlier statement.
11.at pains 尽力，努力
She was at pains to stress the benefits of the scheme.
The teacher was at pains to make sure that we all understood.
12.at peace 处于和平（平静）状态
He is never at peace with himself.
All was at peace in the dead of the night.
Thus Europe was at peace for the first time in ten years.
13.at play 在玩耍，在游戏
Children are at play in the park.
He stayed at home and the rest of the boys were out at play.
14.at present 目前，现在
He doesn’t want to get married at present.
We don’t need any more at present.
at random 随便地，任意地，胡乱地
Choose a card at random from the deck.
The terrorists fired into the crowd at random.
15.at rest 静止，休息，安宁：
The child is never really at rest.
Nothing could put his mind at rest.
16.at risk 处境危险，受到威胁
My job is at risk.
How much at risk is the smoker?
The whole future of the company is at risk.
【注】若指“处于（面临）……的危险”，则用at risk of。如：
She’s at risk of failing in two subjects.
Their children are also at high risk of developing the disease.
比较：at the risk of 冒着（可能）……的危险。如：
We did it at the risk of our lives.
He saved me life at the risk of losing his own.
17.at sea 在海上；茫然，不知所措
He spent three months at sea.
He was all at sea when he began his new job.
18.at sight 一看见
He can play and sing at sight.
The bank receives drafts payable at sight at any time.
【注】若表示“一看见……”，则用at the sight of。如：
Her knees went weak at the sight of him.
At the sight of the police they ran away.
19.at stake 在危急关头，在危险中；冒风险
His business is at stake if he doesn’t get the contract.
This decision puts our lives at stake.
20.at table 在吃饭时
He seldom talks at table.
They were at table when we called.
21.at times 有时，间或
We have fish for dinner at times.
She was difficult to understand at times.
22.at war 处于交战状态
The two countries have been at war with each other for six years.
The country was at war, but life there finally settled down.
23.at will 任意地，随意地，随心所欲地
You may come and go at will.
The animals are allowed to wander at will in the park.
24.at work 在工作，在上班，在忙着
I’ll be at work tomorrow.
He has been at work on a book.
They were watching the artist at work.