TASK DEFINITION: Given a sentence in English language, translate the sentence to Tagalog language keeping the meaning of the original sentence intact.
PROBLEM: English sentence: 14. Communist parties in countries where Communists can conduct their work legally must carry out periodic membership purges (re-registrations) with the aim of systematically ridding the party of petty-bourgeois elements that inevitably percolate into them.

SOLUTION: 14. Ang mga komunistang partido sa mga bansa kung saan ligal na nagagampanan ng mga Komunista ang kanilang mga gawain ay kinakailangang makapag-lunsad ng pana-panahong pagpupurga ng kasapian (muling-rehistrasyon) na may layunin na sistematikong tanggalin ang mga peti-burgis na mga elemento na di-maiiwasang pumasok sa kanila.

PROBLEM: English sentence: In 1925, with Friedrichs as his assistant, Courant began work on a second volume of Courant- Hilbert .

SOLUTION: Sa 1925, na may bilang Friedrichs kanyang assistant, Courant ay nagsimulang magtrabaho sa isang pangalawang dami ng Courant-Hilbert.

PROBLEM: English sentence: During his time in Birmingham, Bell did work of great importance, producing his version of the celebrated CPT theorem of quantum field theory.

SOLUTION:
Sa kanyang oras sa Birmingham, Bell did trabaho ng mga pinakamahalaga, paggawa ng kanyang bersyon ng bantog CPT teorama ng quantum field theory.