He spent the whole evening assuring his mother of his love and devotion.

他用了整整一个晚上向母亲表达孝心。

《新英汉大辞典》

In the name of love and devotion.

在爱和奉献的名称。

youdao

With love and devotion.

献上我的爱与忠诚。

youdao

He expressed his love and devotion to the magnificent country of France, he said, and to the French people.

NPR: French President Chirac Won't Seek Re-Election

"Sharing passwords is seen as a sign of love and devotion, a sign of commitment, " said Robert Siciliano, McAfee's online security expert.

CNN: How to protect your digital data from a vengeful ex

Proving His Love And Devotion Sudden Mischief -- by Robert B.

FORBES: Fact and Comment