n.[机]承盘,挡板,家臣,侍从,[牙科]牙架,保持着
Liz was being paid a regular monthly retainer.
利兹每月得到一笔预付金。
I'll need a five-hundred-dollar retainer.
我将收取500美元的定金。
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。