to make small adjustments in an experimental way
вносить небольшие изменения в экспериментальном порядке (vnosit' nebol'shie izmeneniya v eksperimental'nom poryadke)
"We tinker around with the app design after each user interview."
"Мы вносим небольшие изменения в дизайн приложения после каждого интервью с пользователем." (my vnosim nebol'shie izmeneniya v dizajn prilozheniya posle kazhdogo interv'yu s pol'zovatelem)
to keep emotions inside instead of expressing them
to free yourself from self-doubt and lack of confidence
to extend over a large area or among many people
when the sky becomes covered with clouds
to add something extra for free; to include casually
to move in front or take the lead
