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關(guān)閉窗口 “at+a+名詞”的常見搭配
■湖南 陳根花
at a disadvantage 處于不利地位
They were working at a disadvantage. 他們在很不利的情況下工作。
His inability to speak French puts him at a disadvantage. 他不會說法語，這使他很吃虧。
at a discount 打折，減價，跌價；不時興，不受重視
I bought the TV at a 40% discount. 我以六折買了這部電視。
Honesty was rather at a discount in those days. 在那種年代，誠實很不吃香。
at a distance 在一定距離的地方，隔開一些距離
The picture looks better at a distance. 這幅畫遠些看更好些。
Seen at a distance, the glass necklace might have passed for a genuine one. 稍微遠一點看，那串玻璃項鏈幾可亂真。
【注】keep sb at a distance的意思是“與某人保持距離”“疏遠某人”。如：
She no longer kept her neighbors at a distance. 她不再對鄰居冷淡了。
at a distance of 在……的地方
Can you hit a target at a distance of 200 meters? 你能射中200米外的靶子嗎？
At a distance of six miles you can’t see much. 距離6英里以外的東西很難看清。
at a glance 看一眼（就）
He saw at a glance that she had been crying. 他一眼就看出她剛哭過。
I could tell the difference between them at a glance. 我一眼就能看這兩者之間的區(qū)別。
at a loss 不知所措，不知如何是好
He was at a loss for an answer. 他不知何回答是好。
I’m at a loss what to do next. 我不知道下一步怎么辦。
at a moment’s [minute’s] notice 一接到通知就
He came at a moment’s notice. 他一接到通知就來了。
I am ready to start at a minute’s notice. 我已作好一接到通知就出發(fā)的準備。
at a speed of 以……的速度
He drove at a speed of 35 miles an hour. 他以每小時35英里的速度駕車行駛。
Light travels at a speed of about 186,282 miles (299,728 kilometers) per second. 光速是每秒大約186,282英里（299,728公里）。
【注】at a speed of后通常接速度的具體數(shù)值，比較下面at the speed of的用法。如：
Can the plane fly at the speed of sound? 這飛機能以音速飛行嗎?
注意，下面一句中的at并不表示速度，而是表示“對……”：
The doctors were astonished at the speed of her recovery. 醫(yī)生對她恢復(fù)的速度感到驚訝。
at a stretch 不休息地，一口氣地，連續(xù)地
He worked for six hours at a stretch. 他連續(xù)工作了6個小時。
He always sits by the bank of the river for three or four hours at a stretch. 他經(jīng)常在河邊一坐就是三四個小時。
at a time 一次，每次(www.hz123456.com)
Take the pills two at a time. 這藥每次服兩粒。
I can only carry two at a time. 我一次只能攜帶兩個。
Cross the road one at a time—don’t bunch up. 一次一個地過馬路——別都擠在一起。
【注】不要混淆at a time與at one time，后者的意思是“一度”“過去曾經(jīng)”。如：
At one time I lived in Japan . 我曾一度住在日本。
At one time there were not so many cars on the streets. 從前街上沒有這么多車子。
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