1. 保持，保留，保住，留住
2. 挡住，拦住，止住
3. 记住；记事
4. 雇用，聘用
5. 保存；维持
6. 持有，继续拥有
7. 继续容纳，容纳
8. 买回（赛马中被拍卖的获胜马）
9. 继续干
10. 继续使用

1. vt. 保持; 保留 keep; continue to have or hold
2. vt. 挡住 keep in place

1. hold back within;

   "This soil retains water"
   "I retain this drug for a long time"
   "the dam retains the water"
   

2. allow to remain in a place or position or maintain a property or feature;

   "We cannot continue several servants any longer"
   "She retains a lawyer"
   "The family's fortune waned and they could not keep their household staff"
   "Our grant has run out and we cannot keep you on"
   "We kept the work going as long as we could"
   "She retained her composure"
   "this garment retains its shape even after many washings"
   

3. secure and keep for possible future use or application;

   "The landlord retained the security deposit"
   "I reserve the right to disagree"
   

4. keep in one's mind;

   "I cannot retain so much information"
   

1.保留;保持;保存
Toretain something means to continue to have that thing.

e.g. The interior of the shop still retains a nineteenth-century atmosphere...
这家商店的内部装修仍然保留着19世纪的风格。
e.g. He retains a deep respect for the profession...
他对这个职业仍然深怀敬意。

2.预聘，付定金聘请（律师）
If youretain a lawyer, you pay him or her a fee to make sure that he or she will represent you when your case comes before the court.

e.g. He decided toretain him for the trial.
他决定聘请他为出庭律师。

1. 保留：但是如果你不能使用垃圾收集,你需要释放(release)旧对象,保留(retain)新对象. 事实上有两种方法可以解除一个对象的引用:释放(release)和自动释放(autorelease). 标准的release方法会立刻删除引用. autorelease方法则是尽快的释放引用,

2. 保持：真正的问题在于西方政府继续坚持要求(insist)保持(retain)对全球(global)重大金融机构(institution)的控制,尽管他们正在游离(drift)全球自由贸易体系.

3. 保：另外,Dyer(1988)提出三种人力资源策略的型态:即利诱策略(inducementWhite和Lam(1996)提出人力资源管理导向的观念,认为人力资源管理导向为组织内投入吸引(attract)、确保(retain)、及发展(develop)有才能、有承诺之人力资源的系

4.retain：remote technical assistance and information network; 远程技术援助与信息网络（IBM研制）

5.retain：remote terminal assistance and information network; 远程终端辅助设备与信息网络

1. China dishes retain heat than metal ones do.
   瓷盘比金属盘能保温。
2. She tried to retain her self-control.
   她力图保持自我克制。
3. We shall retain our rights.
   我们将保留我们的权利。
4. This village still retains its old world character.
   这个村庄仍然保持着古色古香的特色。
5. She retains a clear memory of her schooldays.
   她对学生时代的事仍记忆犹新。
6. He finds it difficult to retain information.
   他发现记住信息很困难。
7. Her memory retained everything she read.
   她过目不忘。
8. They built a wall round the shore of the lake to retain the water.
   他们沿着湖边筑起一道堤来挡水。
1
9. The tickets for the cinema must be retained well by a careful person.
   电影票必须让细心人保管好。

retain on〔upon,over〕 (v.+prep.)

对…保持… keep (sth such as influence) over (sb or sth)
retain sth on〔over〕 sth

How does an aging politician retain his hold on the loyalty of the voters?

一个年迈的政客是怎样使选民继续支持他的呢?

His business has been taken over by a big corporation, but he still retains some control over it.

他的商店被一家大公司接管了,但他仍保留部分控制权。

The bank has taken further steps to retain control over the value of the pound.

这家银行已采取进一步措施来保持对英镑购买力的控制。

• Skin, which alone retained his hand to his arm.

  出自：A. Henry

1. retain作“保留,保存,保持”解时是较为正式的用语,含有不失去的意味,指继续“保持”或“保存”某事物。可用于指保留贵重的物品,老人保持活力,记忆中保持一定的事实等。
2. retain是及物动词,接名词或代词作宾语。可用于被动结构。retain还可作“挡住”解。

retain, keep, preserve, reserve

这组词都有“保存”“保留”或“保持”的意思。其区别在于:

1.keep指把某一事物置于自己的权力或管理之下; retain和reserve同义,均指继续“保持”或“保存”某事物, retain是较为正式的用语,还可指记住某事; preserve指把某物“收藏”或“保存”好。

2.retain含有不失去的意味; reserve则强调继续保持而不致失去; preserve强调防止破坏作用,要采取措施使某物完好无损或质量不变。例如:

His business has been taken over by a big corporation, but he still retains some control over it.他的商店被一家大公司接管了,但他仍保留部分控制权。

You'd better reserve your strength for tomorrow's climb.你最好留点力气明天爬山。

Salt preserves food from decay.盐能防止食物腐烂。

keep，retain，reserve，preserve，conserve，withhold

这些动词均有“保持，保存”之意。

keep最常用词，指长时间牢固地保持或保存。

retain指继续保持。

reserve正式用词，指为了将来的用途或其他用途而保存、保留。

preserve主要指为防止损害、变质等而保存。

conserve一般指保存自然资源，保全人的精力、力量等。

withhold指扣住不放，暗示有阻碍。

• ☆ 14世纪晚期进入英语，直接源自古法语的retinere：re (向后） + tenere (握），意为阻止，保留。