an unidentified but informed source
неопознанный, но информированный источник (neopoznannyi, no informirovannyi istochnik)
"A source close to the matter confirmed the rumor."
"источник, близкий к делу, подтвердил слух" (istochnik, blizkii k delu, podtverdil slukh)
to stay focused on your goal
to advance to a higher level or position
The relationship between how much of something is available...
to guide or advise someone, typically in a professional cont...
to make something more interesting or lively
to learn by making mistakes or through difficult experiences
