back

• 指身体上与前面相对的部分（背部）；也表示位于后方、向后或返回。

Describes the part of the body opposite the front; also used to describe something that is behind or returning.

1. Located at the rearA2formal

   Situated at or near the back of something.

   后面的

   • Please use the back entrance to the building.
   • The back row of the theater offers a good view.
   • He sat in the back seat of the car.

   同义词hindposteriorrear

   反义词anteriorfront

2. Past or overdueB1formal

   Relating to a time in the past; not current.

   过期的

   • She is paying off her back rent.
   • The company owes him back pay for overtime.
   • He has a stack of back issues of the magazine.

   同义词oldoverduepastpreviousunpaid

   反义词advancecurrentforwardpresent

3. Remote or isolatedB2informal

   Situated away from the main area or center.

   偏远的

   • They live on a back road in the countryside.
   • The restaurant is located on a back street.
   • We found a quiet back alley to park the car.

   同义词backwoodsdistantfar-flungfar-offinaccessibleisolatedout-of-the-wayoutlyingremotesecluded

   反义词centralcloseforefrontmain

• 副词，表示回到原来的地方、状态或时间；也可表示回应、答复，或朝相反的方向。

An adverb indicating a return to a previous place, condition, or time. It can also mean 'in return' or 'in the opposite direction.'

1. Return to a previous placeA1formal

   To a place or position that was previously occupied.

   回到原处

   • Please go back to your seat.
   • She came back home late last night.
   • He walked back to the store to get his wallet.

2. Return to a previous stateA2formal

   To a condition or situation that existed before.

   回到以前的状态

   • The patient is back to normal after the surgery.
   • Things are finally back to how they were.
   • She wants to go back to her old job.

   同义词afreshagainanewonce more

   反义词forward

3. In return or responseB1formal

   As a reply or reaction to something.

   作为回应

   • He hit back at his critics.
   • She wrote back to me immediately.
   • They fought back against the attackers.

   同义词in kindin returnreciprocally

4. A2informal

   Referring to a time in the past.

   在过去

   • Back in the 1990s, things were different.
   • I remember back when we were kids.
   • Back then, nobody had smartphones.

   同义词agobeforeformerlyoncepreviouslythen

• 指人体从颈部到脊椎底部的后部表面，或物体、区域的后面部分。

A noun referring to the rear surface of the human body from the neck to the base of the spine, or the rear part of an object or area.

1. Rear part of the bodyA1formal

   The part of the human body from the neck to the bottom, opposite the front.

   背

   • He has a pain in his lower back.
   • She carried the child on her back.
   • The doctor examined his back for any injuries.

   同义词dorsum

2. Rear side of an objectA1formal

   The side or surface of something that is opposite the front.

   背面

   • The back of the house faces the garden.
   • Please write your name on the back of the paper.
   • The back of the chair is made of wood.

   同义词back endbacksideposteriorrearreversetail

   反义词forefront

3. Sports positionB1formal

   A defensive player in sports like soccer, rugby, or American football.

   后卫

   • He plays as a full back for the team.
   • The back intercepted the ball and scored.
   • The coach praised the back for his strong defense.

   同义词defender

   反义词front

• 动词，表示支持、赞成或资助某人或某事物，也可表示向后移动或倒退。

A verb used to indicate the act of supporting, endorsing, or moving in a reverse direction.

1. Support or endorseB1formal

   To give support, financial or otherwise, to someone or something.

   支持

   • The committee decided to back the new proposal.
   • Many investors backed the startup company.
   • She backed her friend's decision to change careers.

   同义词advocatechampionendorsefinancefundpromotesponsorsubsidizesupportunderwrite

   反义词blockdiscourageobstructopposeundermine

2. Move backwardsA2formal

   To move in a direction opposite to the one you are facing.

   向后移动

   • He backed the car out of the driveway.
   • She backed away from the angry dog.
   • The truck backed slowly into the loading bay.

   同义词back awayback upbacktrackretreatreversewithdraw

   反义词advanceforward

3. B2informal

   To place a bet on someone or something winning a competition.

   下注

   • He backed the horse to win the race.
   • She backed the underdog team in the final.
   • Many people backed the favorite to win the championship.

   同义词betgamblestakewager

短语动词变体back awayback downback offback outback up