to back up
01
支持, 支援
to support someone or something
Transitive: to back up sb/sth
语法信息
形态构成
短语
动作动词
规则
可分离
小品词
up
基本动词
back
现在时
back up
第三人称单数
backs up
现在分词
backing up
一般过去时
backed up
过去分词
backed up
例子
The loyal fans always back up their favorite sports team.
忠实的粉丝总是支持他们最喜欢的运动队。
02
倒车, 后退
to move or drive something backward
Transitive
例子
She backed up the car into the parking space.
她把车倒进了停车位。
03
备份, 制作备份
to make a copy of computer digital data
Transitive: to back up digital data
例子
I'll back up my important documents before the software update.
在软件更新之前，我会备份我的重要文件。
04
支持, 确认
to confirm that something is true or valid
Transitive: to back up a claim or statement
例子
She backed up her argument with compelling evidence.
她用令人信服的证据支持了她的论点。
05
排队, 堵车
to wait in a long line of cars, unable to move because the road is crowded
Intransitive
例子
The city center was a mess, with cars backing up for miles because of the parade.
由于游行，市中心一片混乱，汽车排起了长队，绵延数英里。
例子
The vehicle cautiously backed up to reposition itself in the tight parking spot.
车辆小心翼翼地倒车，以便在狭窄的停车位上重新定位自己。
07
后退, 撤销
to reverse or undo one's actions or decisions
Intransitive
例子
I had to back up and apologize after realizing my mistake.
意识到自己的错误后，我不得不后退并道歉。
08
重新考虑, 重新评估
to reconsider or rethink one's previous thoughts or decisions
Intransitive
例子
After hearing new information, I decided to back up and rethink my choice.
听到新信息后，我决定退一步，重新考虑我的选择。
