He was unfailingly polite to customers.

他对顾客永远都彬彬有礼。

《柯林斯英汉双解大词典》

His relations with colleagues, differences of opinion notwithstanding, were unfailingly friendly.

他与同事们尽管有意见分歧，但关系一直很融洽。

《柯林斯英汉双解大词典》

The recession has certainly come with more problems than Andrea anticipated, but she remains unfailingly optimistic.

经济衰退带来的问题当然比安德里亚预期的要多，但她始终保持乐观。

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This place remains an unfailingly good address for a trencherman's feed of impeccably prepared bistro classics.

NPR: Excerpt: 'Hungry for Paris'

The unfailingly consistent excellence of the Irish Rep is no less easy to take for granted.

WSJ: Truth Is Scarier | The Weir | Irish Repertory Theatre | The Master Builder | Brooklyn Academy of Music | By Terry Teachout

"He unfailingly represented his views eloquently and emphatically, " Helms, R-North Carolina, said in a statement.

CNN: Wellstone made mark as liberal champion