B2 in, into, or towards a previous place or condition, or an earlier time在原处;回到原处;恢复原状;返回;回到以前
A2 in return作为回报
A2 in reply作为回答
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After the trip, it was nice getting back to a few home comforts.
She thinks he'll come back, but she's deceiving herself.
That's enough, Peter. Give those toys back, please.
I think I locked the door but I'll go back and check just to make sure.
When I look back I can see where we went wrong.
Will you put the books back when you've finished with them?
B2 further away in distance向后;远离
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Please stand back - then all of you will be able to see what I'm doing.
The line of traffic stretched back several miles.
Could you stand back from these shelves and tell me if they're level?
Our house is set back from the road.
As the body was carried through the crowd, people drew back respectfully .
A2 the inside or outside part of an object, vehicle, building, etc. that is furthest from the front后面;后部;背面
close together and facing in opposite directions背靠背
happening one after another, without interruption一个接一个
C2 with the back part of something where the front should be前后倒置
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I always keep a tool set in the back of my car.
She lay on the grass and the stiff dry grass prickled the back of her legs.
The previous owner of the house had built an extension on the back.
I found her kneeling in prayer at the back of the church.
The keyboard plugs in at the back of the computer.
A2 the part of your body that is opposite to the front, from your shoulders to your bottom背部,后背
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The dog rolled over onto its back.
I pulled a muscle in my back lifting some drawers.
I go to sleep on my back but I always wake up in a different position.
Our dog has a black patch on his back.
I've got a pain in my lower back.
(in some sports, such as football) one of the players in a team who try to stop players from the other team from scoring goals, rather than trying to score goals himself or herself(足球等运动的)后卫球员
C2 [ T ] to give support to someone or something with money or words支持;资助
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This theory needs to be backed up with solid empirical evidence.
The troops were backed by tanks, artillery, and other heavy armour.
It is hoped that all sides will back the peace plan.
A poll indicated that 77 percent of Americans backed the president's plan, with only 6 percent in opposition.
Although Paris backs the U.N. demands, it has made it clear it will not take part in any new military action.
to risk money by saying that you think a horse, team, etc. will win a race, game, or competition in order to win more money if they do下赌注于
C2 [ I or T, + adv/prep ] to (cause to) move backwards(使)后退;使倒退
[ T ] to cover the back of something with a material, often to make it stronger or thicker给某物加背衬使其更加坚固或厚实
at or near the back of something后面的,后部的,背部的
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It says on the back cover of the book 'highly commended'.
She skidded off the road when her back wheels hit an icy patch.
They sat in the back row of the cinema kissing and cuddling.
Let's take our drinks out into the back garden.
Apparently one of her back teeth is very sore.
paid after the end of a period of time when it should have been paid延迟的,拖欠的
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