1、不够
...[raise slightly] 身体的全部或上部向前微倾,以表达敬意[be deficient in;be short of] 不够;短缺[shortcoming] 缺点,不足之处 ...
2、欠缺
...赤字 deficit欠缺 be deficient in; be short of ...不敷，亏空(额)，赤字 deficit ...
3、则是具体或明确地指出
3.be deficient in则是具体或明确地指出、说明在某方面缺少或不足。例如:
4、缺乏
...bsence/ insufficiency/ scarcity of = Be lack of/be short of/ be deficient in/ be in need of (严重地/明显地/相对地) 缺乏··· Be a hurdle to/ be a hindrance to/ be a barrier to 阻碍··· ..
be deficient in capital缺乏资金
be deficient in quantity数量不定
To be deficient in virtue谦谦之德
to be deficient in sth匮乏;匮缺