to think about something that happened in the past
думать о чем-то, что произошло в прошлом (dumat' o chem-to, chto proizošlo v proshlom)
"When I look back at my college days, I realize how much I’ve learned."
"Когда я оглядываюсь на свои университетские дни, я понимаю, сколько я научился." (kogda ya oglyadyvayus' na svoi universitetskie dni, ya ponimayu, skol'ko ya nauchilsya)
to contact people who might be interested in funding your bu...
to combine or mix aspects from different cultural background...
to keep the door open for someone as a polite gesture
to save money for a specific purpose
to say thank you to someone
to introduce changes to improve a system or policy