strength/ strεŋθ /

1.noun [u] 
(physical) 力气

2.noun [of object] [ material] 
强度

3.noun [of person] [ organization] [ country] 
(power,influence) 实力

4.noun [u] 
(courage,determination) 勇气

5.noun [c/u] 
(quality,ability) 长处

6.noun [of feeling] [ opinion] [ belief] 
(intensity) 力量

7.noun [u] 
(number of people) 人数

8.noun [of drink] [ chemical] 
浓度

on the strength of
依凭
to go from strength to strength
不断取得成功
at full strength
全体
below strength
 [+staff,army,team] 人手不足
strength of mind/character
充足的信心/坚强的性格