1.
not aggressively self-assured, though not necessarily lacking in confidence.
不过分的自信，尽管不一定缺少自信。
2.
inclined to timidity or lack of self-confidence.
倾向于胆怯或者缺少自信。
3.
The young teacher lacked assurance in front of his class.
这位青年教师在学生面前缺少自信心。
4.
Self-distrust is the cause of most of our failures.-- Boyee
我们绝大多数人失败的原因是缺少自信。——佩恩
5.
As an Aquarius, although you have the utmost respect for yourself, you're lacking in the self-esteem department at times.
水瓶：尽管你对自己充满自信，但有时还是缺少了一点自负。
6.
lacking natural ease.
缺少自然的从容自在。
7.
lacking or indicating lack of confidence or assurance.
缺少或者表现出缺少信心或者把握。
8.
Along with his humbleness because he knew so little, there arose a conviction of power.
他一方面因为缺少学问而自卑，另一方面也相信起自己的力量来。
9.
lacking conviction or boldness or courage.
缺少信心、胆量或者勇气。
10.
lacking or marked by a lack of confidence.
缺乏自信或者以缺乏自信为特点。
11.
diffidence about self promotion.
对自己的提升缺乏自信。
12.
He failed because he lacked confidence in himself.
他因缺乏自信而失败了。
13.
He failed through diffidence.
他因缺乏自信而失败。
14.
She lacked the courage of her convictions.
她缺乏自信的勇气。
15.
He has diffidence in expressing his opinions.
他表达意见时缺乏自信。
16.
I always have been deficient in selfconfidence and decision.
我向来缺乏自信和果断。
17.
the awkward age (period of adolescence when young people lack confidence and have difficulty preparing for adult life)
尴尬年龄（青春期的一段时期,青少年在此期间缺乏自信心,难以适应成人生活）.
18.
Insufficient base table information for updating or refreshing.
缺少用于更新或刷新的基本表信息。