n.缺乏；不足；缺陷；缺点
I have a slight calcium deficiency. 我有点缺钙。
The result in either case is an energy deficiency. 不论哪种情况结果都会导致能量损失。
Things will go much better if people of the same trade make up the other's deficiency from their own surplus. 同行业之间互通有无，调剂余缺，事情就好办得多了。
It is diligence that makes up for deficiency. 勤能补拙。
It was the deficiency we were struggling to correct. 此一缺点我们正在努力改进中。
n.免疫缺陷
