retainer

英 [rɪˈteɪnə(r)]

美 [rɪˈteɪnər]

n. (聘请律师等的)预付费用，保留金; (为保留租房而付的)租房订金; 牙齿固位体; 保持器

复数：retainers　

Collins.1 / BNC.14524 / COCA.17162

牛津词典

noun

（聘请律师等的）预付费用，保留金
a sum of money that is paid to sb to make sure they will be available to do work when they are needed
1. The agency will pay you a monthly retainer.
  这个机构将会每月付给你聘用金。
（为保留租房而付的）租房订金
a small amount of rent that you pay for a room, etc. when you are not there in order to keep it available for your use
牙齿固位体；保持器
a device that keeps a person's teeth straight after they have had orthodontic treatment with a brace
（尤指服务多年的）仆人，家仆
a servant, especially one who has been with a family for a long time

N-COUNT 定金;预付金
Aretaineris a fee that you pay to someone in order to make sure that they will be available to do work for you if you need them to.
1. I'll need a five-hundred-dollar retainer...
  我将收取500美元的定金。
2. Liz was being paid a regular monthly retainer.
  利兹每月得到一笔预付金。
N-COUNT （服务多年的）仆人，家仆
A servant who has been with one family for a long time can be referred to as aretainer.
1. I found the gardener, a family retainer, morosely surveying the scene.
  我发现这个园丁——家里一个服侍多年的仆人，愁眉苦脸地审视着这个场景。

noun

a dental appliance that holds teeth (or a prosthesis) in position after orthodontic treatment
a person working in the service of another (especially in the household)
Synonym:servant
a fee charged in advance to retain the services of someone
Synonym:consideration

Install new retainer module assembly into valve body by aligning "U" shaped cutout in retainer with the valve outlet.
通过对齐护圈上和阀门出口的“u”形切口，将新的护圈模块总成装配到阀体内。
A screwdriver is used to remove the spiral seat retainer ring from its groove.
采用一把螺丝刀从凹槽中拆卸螺旋阀座定位器环。
Both the retainer side and the body side seats are locked into the valve body.
定位装置的侧面和阀体侧面阀座都锁定在阀体内。
Liz was being paid a regular monthly retainer.
利兹每月得到一笔预付金。
To do this, attach special tool retainer plate to the engine.
为此，请将专用工具固定板安装到发动机上。
This type bearing consists of a sleeved outer ring, multi-row balls and a retainer.
直线运动轴承由一个圆筒形外圈和多列钢球及保持架组成。
If the retainer plate has become detached from the windscreen, the windscreen must be replaced.
如果将固定板从风挡分离，则必须更换风挡。
The upper stem is threaded into the diaphragm retainer nut.
上阀杆通过丝口旋在横膈膜止动螺母里。
Unclip the base of the interior rearview mirror from the retainer plate.
从固定板上松开车内后视镜的基座。
Additional support must be inserted all the way into the engine retainer plate.
附加支撑件必须一直插入到发动机的固定板中。