I was amazed by their discourtesy and lack of professionalism.

我为他们的无礼和职业精神的缺乏所震惊。

《柯林斯英汉双解大词典》

QYKJ survives with the oath of professionalism, devotement, concentration, completeness, quality and energy conservation.

清阳洁净科技谨以专业、专注、专心、全面、品质、节能为生存格言。

youdao

That required a huge amount of professionalism.

需要很多很多的专业素养。

youdao

Crucially, volunteerism, like that of the President, also reflects a belief in the limits of professionalism.

FORBES: Obama's Inaugural Address and the Limits of Government

Lots of them now offer courses on ethics, surely a key attribute of professionalism.

ECONOMIST: Business schools

And their desire to enforce the highest standards of professionalism in the players is admirable in principle.

WSJ: Aussie Wrangling Raises a Laugh