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

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。
Position the end cap on the rear of the retainer and the outer edge of the bumper.
在扣件尾部和保险杆边缘外部定位末端端盖。
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。
Support the engine using a jack and retainer plate.
用千斤顶和固定板支撑发动机。
Remove intake manifold, yoke retainer and aligning yokes.
拆下进气歧管、叉臂轭护圈，并对正叉臂轭。
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。
Attach special tool retainer plate to engine.
将专用工具固定板连接至发动机。
Press and open the lugs of the cable retainer.
按下并打开电缆卡子的凸耳。
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。