I wouldn't trust them in spite of all their la-di-da manners.

尽管他们处处显得很高雅的样子，我还是不相信他们。

《柯林斯英汉双解大词典》

And it's not a la-di-dah thing where--I'll tell you, once there was a student in there who had really fantastic French and I said, "Why is your French so good?"

其实也不是那么严格要求的,我给你们讲,以前有个学生法语特好,我就问他你法语怎么这么好啊

耶鲁公开课 - 1871年后的法国课程节选

And Sir Paul McCartney wrapped up proceedings with a jaunty crowd participation version of Ob-La-Di, Ob-La-Da.

BBC: Stars shine on The Queen at Jubilee concert

La cambiale di matrimonio - The marriage contract - was streamed from Vienna's Kammeroper theatre on Sunday.

BBC: Live online opera debut in Vienna

When I turned out for La Biennale di Venezia my worst fears were confirmed as to the disenchantment of mid-career artists with the political and economic milieu they faced.

FORBES: My Leading Indicator Is Art In Venezia