He has no self-confidence.

他毫无自信。

《牛津词典》

His style of dressing bespoke great self-confidence.

他的衣着风格显得十分自信。

《牛津词典》

His constant criticism ate away at her self-confidence.

他不断的批评使她逐渐丧失了自信心。

《牛津词典》

But Gomez ends "Try to Remember" on a positive note, as Gabi gains self-confidence, educates herself and finds the strength to become an independent young woman.

VOA: standard.2010.07.22

then I think absolutely plastic surgery can... maybe should be used if it's going to help with your self-confidence.

那么我觉得整形手术一定能……如果它能帮你增强自信，就应该整形。

关于整形手术 - SpeakingMax英语口语达人

According to Halvorson, our lack of self confidence in our abilities causes us to give up too soon.

FORBES: Women: Are We Our Own Worst Enemy?

"Our economy is still in a weakened condition, and our self confidence as a nation has been shaken, " Mr Lenihan said.

BBC: Tough 2010 Irish budget unveiled

She says that even the most experienced women tend to suffer from a lack of self confidence and sense of vulnerability.

CNN: STORY HIGHLIGHTS