A1 continuing for a large amount of time长时间的,长久的
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Passengers could face long delays.
She had a long career in films.
She gave him a long, lingering kiss.
They had a long and happy marriage.
After a long, awkward pause someone asked a question.
A1 being a distance between two points that is more than average or usual(距离、长度)长的
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He noticed her long delicate fingers.
It's a heck of a long way to the nearest shop from here.
I love going on long journeys.
There's a long flight of steps ascending to the cathedral doors.
The island has long golden beaches fringed by palm trees.
A2 used to describe a piece of writing that has a lot of pages or words(文章)长的,字数多的
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I got a lovely long newsy letter from Bec.
His speech was long and dull.
He is well known to the police and has a long criminal record .
Your conclusion is good, but the final sentence is too long and complicated.
It gives you a sense of achievement if you actually make it to the end of a very long book.
A2 used to mean "(for) a long time", especially in questions and negative sentences(尤用在疑问句和否定句中)长久地,长时间地
C2 a long period of time before or after something在…之前(或之后)的很长一段时间
used with the past participle or the -ing form of the verb to mean that a state or activity has continued for a long time(与过去分词或动词的 ing 形式连用表示持续了很久的状态或活动)
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So how long have you been married to Nicky?
Changes to the tax system are long overdue.
How long did Queen Victoria reign?
He's been single so long now, I don't think he'll ever marry.
I do apologize - my train was delayed. I hope you haven't been waiting long.
B1 used to say that something must happen before something else can happen只要,如果
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Windsurfing is perfectly safe as long as you use some common sense.
So long as he's happy - that's all that matters .
Goods are exchangeable as long as they are returned in good condition.
I don't foresee any difficulties so long as we keep within budget.
I don't mind being woken up once or twice in the middle of the night by my flatmate so long as she doesn't make a habit of it .
C2 to want something very much渴望…;渴望做…
written abbreviation forlongitude 经度(longitude的缩写)
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