The root of his problem is a lack of confidence.

他的问题的根源在于缺乏自信。

I think a lack of confidence underlies his manner.

我认为他表现出的态度是因为他缺乏信心。

Where there has been a lack of confidence, a new confidence now ensues.

当我们正处于缺乏自信的时候，现在新的自信就接踵而至了。

Like so many things, a lack of confidence can become a self-fulfilling prophecy.

事实证明，缺乏自信会成为一种自我实现的预言。

There is a lack of confidence in how themayor is managing municipal services.

人们对于这位市长如何管理市政服务也是缺乏信心的。

Young girls want to look like these unrealistic images, which has led to a rise in eating disorders and a lack of confidence.

年轻的女孩们希望自己看上去与这些不切实际的形象一样，由此导致了饮食紊乱和缺乏自行的情况的上升。

However, this season has brought on one disappointment after another for Walton as injuries and a lack of confidence have derailed much of the momentum he established last season.

然而本赛季作为伤员的他表现令人非常失望，由于缺乏自信，导致了他上个赛季那些出色的表现已经不复存在了。