Given the task definition and input, reply with output. Given a sentence in Tagalog language, translate the sentence to English language keeping the meaning of the original sentence intact.

Tagalog sentence: Sa 1925, na may bilang Friedrichs kanyang assistant, Courant ay nagsimulang magtrabaho sa isang pangalawang dami ng Courant-Hilbert.
In 1925, with Friedrichs as his assistant, Courant began work on a second volume of Courant- Hilbert .