1
long + noun
long 作定语修饰名词，表示空间上的“长的”。
She has long hair.
她留着长发。
长的；长距离的
先理解核心含义，再看它在真实句子里的用法。
长的；长距离的
Having a great physical length or extending a long distance.
She has long hair.
她留着长发。
指空间距离
空间距离长的。
Having much distance in space from one end to the other.
行进或延伸距离过长的。
Travelling or extending too great a distance in space.
主要指时间上的；表示或指相对较大或大于平均的持续时间或时间流逝,或指定的持续时间
primarily temporal sense; being or indicating a relatively great or greater than average duration or passage of time or a duration as specified
持续时间长的。
Having great duration.
The movie was so long that I fell asleep halfway through.
这部电影太长了，我中途睡着了。
AI contextual example
She has long hair that reaches her waist.
她有一头长头发，垂到腰间。
AI contextual example
This bridge is longer than the one we crossed yesterday.
这座桥比我们昨天过的那座更长。
AI contextual example
a long life
漫长的一生
WordNet
long 作定语修饰名词，表示空间上的“长的”。
She has long hair.
她留着长发。
说明具体长度时，long 放在数量短语之后。
The bridge is two hundred meters long.
这座桥长两百米。
too long to do 表示“因太长而无法做某事”。
The meeting was too long to finish in an hour.
会议太长，一个小时开不完。
longer 是 long 的比较级；get + 比较级表示逐渐变化。
The days are getting longer in spring.
春天白天越来越长。
Not this
He is very long.
Use this
He is very tall.
描述人的身高应用 tall，long 只表示水平距离或时间长度。
Not this
I have been waiting long time.
Use this
I have been waiting a long time.
long time 表示一段持续时间时是可数名词短语，需要加不定冠词 a。
Not this
How long is the school from here?
Use this
How far is the school from here?
询问两地距离用 how far；how long 用于问时间或物体本身的长度。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
长时间
It took a long time to finish the project.
完成这个项目花了很长时间。
长距离
We drove a long distance to get there.
我们开车走了很长的距离才到那里。
长期
She studied for a long period without a break.
她连续学习了很长一段时间。
长时间
Doctors often work long hours.
医生经常长时间工作。
长时间等待
There was a long wait at the airport.
机场有长时间的等待。
远路
It's a long way from here to the station.
从这里到车站很远。
从长远来看
In the long run, investing in education pays off.
从长远来看，投资教育是值得的。
年纪大；老迈
My car is getting long in the tooth; I should consider a new one.
我的车越来越旧了，该考虑换辆新的了。
长话短说
Long story short, we missed the flight and had to stay overnight.
长话短说，我们错过了航班，不得不过夜。
通往你家门的那条漫长而蜿蜒的路
In the song, he sings about the long and winding road that leads to his lover's door.
在这首歌中，他唱到了那条通往他爱人家门的漫长而蜿蜒的路。
好久不见。
When he met his old friend, he said, 'Long time, no see.'
当他遇到老朋友时，他说：‘好久不见。’
Use long naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把long的首字母l想象成一条长长的直线，即代表时间或空间的‘长’。
通常用于描述物理长度或时间长度，中性语体，适用于多种语境。
作表语或定语，常用比较级和最高级，与for搭配表示持续时长。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.