保持

You must do sport and keep healthy

你应该进行合格证活动,保持身体健康

keep healthy保持健康 | You must do sport and keep healthy. 你应该进行合格证活动,保持身体健康. | You must look after yourself and keep healthy. 你应当照顾好自己,保持身体健康.

FY

高应力黄铜实体保持架

FT- 酚醛树脂实体保持架 | FY- 高应力黄铜实体保持架 | GP- 镀银保持架

Hawley retainer

霍利保持器

正畸保持器 orthodontic retainer | 霍利保持器 Hawley retainer | 缺隙保持器 space maintainer

keep healthy

保持健康(该三种用法都是对的,考试时要看有多少个空)

keep in goood healthy 保持健康 | keep healthy 保持健康(该三种用法都是对的,考试时要看有多少个空) | stay healthy 保持健康

keep one's gravity

保持严肃

keep one's balance%[]%保持平衡,保持冷静% | keep one's gravity%[]%保持严肃% | keep one's own counsel%[]%保密,不相信别人%

keep quiet

保持安静(别吵)

保持镇静(别慌) keep calm | 保持安静(别吵) keep quiet | 保持不动(别动) keep still

Keep Silence

保持安静;保持沉默

keep sb. doing sth. 使.......坚持做 | keep silence保持安静;保持沉默 | keep sth. to oneself把......据为己有

keep still

保持不动(别动)

保持安静(别吵) keep quiet | 保持不动(别动) keep still | 保持沉默(别说话) keep silent

keep to

坚持,保持

keep on 继续不断,保持 | keep to 坚持,保持 | keep up 保持,维持;继续进行,坚持

Ladylike,madam,ladylike

保持风度,夫人,保持风度

Why don't you shut up,you...|你为什么不闭上你的嘴,你... | Ladylike,madam,ladylike.|保持风度,夫人,保持风度 | Five days of feasting and games|五天的盛会和娱乐

NHL：abbr. non-hodgkin lymphoma; 淋巴瘤

complete ordered field：完备有序体

完全的空间n点形 complete n-point in space | 完备有序体 complete ordered field | 完全正(直)交系 complete orthogonal system