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at present 目前，現(xiàn)在
He doesn’t want to get married at present. 他現(xiàn)在還不想結(jié)婚。
We don’t need any more at present. 目前我們不需要更多的了。
at random 隨便地，任意地，胡亂地
Choose a card at random from the deck. 從這副牌里隨便選一張。
The terrorists fired into the crowd at random. 恐怖分子向人群胡亂射擊。
at rest 靜止，休息，安寧：
The child is never really at rest. 這孩子老是手腳不停。
Nothing could put his mind at rest. 什么也不能使他的心安寧下來(lái)。
at risk 處境危險(xiǎn)，受到威脅
My job is at risk. 我的工作保不住了。
How much at risk is the smoker? 吸煙者的危險(xiǎn)性有多大？
The whole future of the company is at risk. 公司的整個(gè)前途受到威脅。
【注】若指“處于（面臨）……的危險(xiǎn)”，則用at risk of。如：
She’s at risk of failing in two subjects. 她面臨兩門課程不及格的危險(xiǎn)。
Their children are also at high risk of developing the disease. 他們的孩子患此病的風(fēng)險(xiǎn)也很高。
比較：at the risk of 冒著（可能）……的危險(xiǎn)。如：
We did it at the risk of our lives. 我們冒著生命危險(xiǎn)做此事。
He saved me life at the risk of losing his own. 他冒著生命危險(xiǎn)救了我的命。
at sea 在海上；茫然，不知所措
He spent three months at sea. 他在海上度過(guò)了3個(gè)月。
He was all at sea when he began his new job. 他開始新工作時(shí)茫然不知所措。
at sight 一看見(jiàn)
He can play and sing at sight. 他一看譜就能演唱。
The bank receives drafts payable at sight at any time. 銀行隨時(shí)兌換見(jiàn)票即付的匯票。
【注】若表示“一看見(jiàn)……”，則用at the sight of。如：
Her knees went weak at the sight of him. 她一看見(jiàn)他腿就發(fā)軟。
At the sight of the police they ran away. 他們一看到警察就跑走了。
at stake 在危急關(guān)頭，在危險(xiǎn)中；冒風(fēng)險(xiǎn)
His business is at stake if he doesn’t get the contract. 如果拿不到合同，他的企業(yè)就有危險(xiǎn)。
This decision puts our lives at stake. 這么一決定，我們的生命就吉兇難卜了。
at table 在吃飯時(shí)
He seldom talks at table. 他吃飯時(shí)很少說(shuō)話。
They were at table when we called. 我們?nèi)ピL問(wèn)時(shí)他們正在吃飯。
at times 有時(shí)，間或
We have fish for dinner at times. 有時(shí)我們晚餐吃魚。
She was difficult to understand at times. 有時(shí)候她很不容易理解。
at war 處于交戰(zhàn)狀態(tài)
The two countries have been at war with each other for six years. 這兩個(gè)國(guó)家已經(jīng)打了6年。
The country was at war, but life there finally settled down. 那個(gè)國(guó)家處于戰(zhàn)爭(zhēng)狀態(tài)，但那里的生活最終平靜下來(lái)。
at will 任意地，隨意地，隨心所欲地(www.hz123456.com)
You may come and go at will. 你可以來(lái)去自由。
The animals are allowed to wander at will in the park. 這些動(dòng)物可以在公園里自由走動(dòng)。
at work 在工作，在上班，在忙著
I’ll be at work tomorrow. 我明天要上班。
He has been at work on a book. 他一直在忙于寫一本書。
They were watching the artist at work. 他們看著那藝術(shù)家忙個(gè)不停。
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