"Now,with large epidemiological studies done everywhere including here, we can say with a great level of confidence that the disease affects roughly the same percentage of the general public worldwide.

VOA: special.2010.11.16

Because you'll have an appropriate level of confidence and competence in your ability to do computational problem solving.

因为你们在自己的能力范围内,拥有应对解决计算问题的,正当水平的自信心和竞争力。

麻省理工公开课 - 计算机科学及编程导论课程节选

And then you'll find that your level of competency increases, your confidence level improves,

到时候你会发现你的能力提高了，信心增强了，

学第二外语的时候 - SpeakingMax英语口语达人

And ultimately in the age of the global economy, both political leaders and corporate leaders are subject to the discipline of the markets, as sovereign bondholders and shareholders can sway corporate and country-level confidence dramatically.

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"Since the middle of December 2012, commissioners have sensed a real sea change in the level of confidence at both member and officer level that the council can move beyond recovery to deliver the commitment it has made to transform itself into a 'new Anglesey', " he said.

BBC: Anglesey council offices

Consumer confidence in July was better but not nearly at the level of a healthy economy, a healthy level of confidence.

WHITEHOUSE: Press Briefing