Given a sentence in English language, translate the sentence to Tagalog language keeping the meaning of the original sentence intact.

English sentence: 19 But Mary kept all these things, and pondered them in her heart.
19 Datapuwa't iningatan ni Maria ang lahat ng mga pananalitang ito, na pinagbulaybulay sa kaniyang puso.

English sentence: It was an important work on groups of euclidean motions, and it was a major step towards proving Hilbert 's eighteenth problem.
Ito ay isang mahalagang trabaho sa mga grupo ng euclidean motions, at ito ay isang malaking hakbang patungo sa proving Hilbert 's ikalabing-walo problema.

English sentence: “The clean-up activity paved the path in bringing out the bayanihan spirit (spirit of unity) in our area. We also want other communities to feel the compassion and love that Tzu Chi Foundation bestowed on us. We can accomplish this by becoming volunteers ourselves,” expressed happily by Avendaño.

“Naging daan ang cleanup activity upang mailabas ang “bayanihan” sa aming lugar. Nais din naming maipadama sa ibang lugar ang pagkupkop sa aming ng Tzu Chi Foundation; magagawa namin ito sa pamamagitan ng pagiging mga volunteers,” masayang pahayag niya.