adj (1)長的(measuring a great or specified distance from one end to the other)：go on a～journey 長途旅行;a～rope/road/river 一根長繩/一條長長的路/一條大河;～legs/arms/hair 長腿/臂/發(fā);These trousers are not～enough for me. 這條褲子我穿不夠長。The room is five metres～.這個房間長五米。How～is the Great Wall of China?長城有多長?～johns 長內(nèi)衣褲;a～jump 跳遠; ～wave 長波;〖反〗short;
?(2)時間長的(having or using a great or specified period of time)：a～conversation/discussion/speech 長時間的交談/討論/演講;wait for a～time 等很長的時間;There was a～delay before the plane took off.飛機起飛前耽擱了很長時間。How～is the summer vacation?It's seven weeks～. 暑假有多長?有七個星期長。The film is two hours～. 這部電影兩小時長?！挤础絪hort;
?(3)感覺漫長的(seeming or feeling to measure a greater distance in space or time than usual)：It's been a very～day. 這是漫長的一天。It was a～day at work because I had very little to do. 因為沒有什么事可做，那個工作日顯得很長。Due to the wind and rain，it was a very～three miles into town. 由于刮風下雨，進城去的三英里路顯得很漫長。wait for a～hour 足足等了一個小時;
?at (the) longest 最長，至多：We can wait only two days at the～est. 我們最多只能等兩天。
?(not) by a long chalk/shot 遠(沒有)：He has not finished his work by a～chalk. 他遠沒有完成他的工作。
?go a long way 1)大有作為：The boy will go a～way，I am sure. 我肯定這個男孩會大有作為的。2)很有助于：The new plan will go a～way towards solving the housing problem. 這項新計劃將很有助于解決住房問題。3)禁用(花)：With some children，small sums go a～way. 有些小孩一點點錢可以花很長時間。4)叫人受不了：A little of her company goes a～way. 跟她待上一會兒就叫人受不了。
?come a long way 有了很大的改善(進展)：The school has come a～way since its beginning. 這所學校從建校初期到現(xiàn)在有了很大的發(fā)展。
?in the long run 從長遠來看(說)：It is their only hope of survival in the～run. 從長遠來看那是他們生存的唯一希望。
?(have/put on/pull/wear) a long face 哭喪著臉，顯出沮喪的樣子：Don't pull a～face when I tell you to go to bed. 我讓你去睡覺你不要不高興。
?take a long look at 仔細考慮：Take a～look at the cold facts before cutting defence spending. 在削減國防經(jīng)費之前，要仔細考慮一下嚴酷的現(xiàn)實。
?take the long view 從長遠考慮，目光遠大：Those who took the～view are now reaping the benefit of such a policy. 那些目光遠大的人現(xiàn)在得到這種政策的好處了。
?to cut a long story short 長話短說，簡言之：To cut a～story short，I decided to turn down the job. 簡言之，我決定拒絕這份工作。
?→?long-′distance adj & adv 長途的(地);?long-′lived adj 長壽的;′long-range adj 長期的，遠程的;?long-′sighted adj 遠視的，有遠見的;?long-′term adj 長期的;?long-′winded adj 喋喋不休的，冗長而令人生厭的;
?adv (1)長期(久，時間)地(for a long time)：wait/stay～等/待很長時間;L～live ...!……萬歲!I have lived～enough. 我年紀已經(jīng)夠大的了。He has～wanted to write a book. 他早就想寫一本書了。
?(2)早在或以后很久(at a much earlier or a much later time than indicated)[無comp]：～after midnight/World War II 下半夜/二次世界大戰(zhàn)后很久;～before the war/before sb was born 早在戰(zhàn)前/某人出生前很久;～ago 很久以前;～since 很久以來;
?(3)始終(from the beginning to the end)：all day/night～整天/夜;one's whole life～一輩子;all summer/winter～整個夏天/冬天;
?as/so long as 只要……就：You may borrow the book as～as you keep it clean. 只要你不把它弄贓，就可以借這本書。
?no longer (not any longer)不再：I can't wait any～er. 我不能再等了。He's no～er fit to be a member of this club. 他不再適合作這個俱樂部的成員了。
?so long 再見(infml)?
?n (1)長時間(a long time)[U]：It will not take～. 這不需要很長時間。He didn't speak for～. 他沒有講很長時間。
?(2)長音(信號)(syllable，signal of long duration)[C]：four～s and six shorts 四個長音和六個短音;The signal was two～s and a short. 信號是兩長一短。
?before long 很快，不久：Come in and wait—he'll be back before～. 進來等一等，他很快就會回來。
?the long and (the) short of it 要點，總之：The～and the short of it is that you must pay me the money. 總而言之，你必須付給我錢。
?→?long-drawn-′out adj 拖(拉)長的;?long-′standing adj 長期的，由來已久的;lon′gevity n 長壽;′longitude n 經(jīng)線(度);
?【用法】long和a long time都作時間狀語。long只在被too，enough，ago等另一副詞修飾時才用于肯定句。兩者都可用于疑問句。在否定句中，兩者在意思上有區(qū)別。試比較：He hasn't been here for a long time.(他好久沒有到這里來了。)He hasn't been here long.(他到這里沒有多久。)