Mr. Perks questioned them at length to establish their bona fides.

珀克斯先生详细地询问他们以确定其诚意。

《柯林斯英汉双解大词典》

The mala fides of the company is generally a question for the jury.

总的说来，该公司的蓄意欺骗行为是陪审团要考虑的一个问题。

youdao

Every source I work with must prove their bona-fides on an ongoing basis.

我与之接触的每个来源，都必须证明他们的真诚作为继续合作的基础。

youdao

It has a dramatic history (thanks, Eva Peron), artistic and creative bona fides and city-wide dynamism.

BBC: This is Buenos Aires week

Not surprisingly Nokia is trying to build on this success, by emphasizing its security bona fides.

FORBES: Can Nokia's Lumia Steal RIM's Security Thunder?

Financial bona fides aside, increases to the debt ceiling at such moments are critical.

FORBES: Debt Ceiling: How Can The U.S. Fix This Fiscal Fiasco? Abolish It