1.
retention of subject matter
教材的保持 教材的保持
2.
method of retained members
保持人数法 保持员数法
3.
adopt/keep/maintain a low profile
采取[保持/维持]低姿态
4.
But, please keep quiet.
但是，请保持安静。
5.
Wash often. Keep clean.
常清洗、保持清洁。
6.
&Keep trailing blanks
行尾保持空白(&K)
7.
&Keep existing Breakpoint
保持已有断点(&K)
8.
It actually means @keep in touch.
应该说“保持联系。”
9.
Do not panic. Sit still and keep calm .
不要慌，保持镇定。
10.
lose/preserve one's virtue
失去[保持]贞洁.
11.
Clearance 15 ft.
保持距离 15英尺
12.
keep/be abreast of/with
1. 保持与...并列
13.
store in a deepfreeze, as for conservation.
低温保存以便永久保持。
14.
not remaining rigid or straight.
不保持刚硬或不保持直的状态。
15.
hold on the land
保持看到陆地保持与陆地接触
16.
hold drift of track-hold circuit
跟踪-保持器保持漂移电路
17.
Keep the balance of yin and yang, keep the good health.
保持身体阴阳平衡，就能保持身体健康。
18.
To adhere to established rules or predetermined courses of action.
保持一致坚持保持成规或预先确定的行动方案