中文翻译与英英解释

1.悲悯以极的。
2.〔 D- P-〕 《圣经》第一百三十诗篇〔篇首语是此二词，故以之代篇名〕；哀悼经。

de:    de2 〔法语〕 ＝ of from. de haut ...

De profundis refers to Psalm 130 (129 in the Vulgate), traditionally known as the De profundis from its opening words in Latin.