to try to understand something that is confusing
пытаться понять что-то, что сбивает с толку (pytat'sya ponyat' chto-to, chto sbivaet s tolk)
"He puzzled over the strange message all night."
"Он всю ночь пытался понять странное сообщение." (On vsyu noch' pytalsya ponyat' strannoe soobshchenie.)
to pay attention to what someone feels or says with empathy
to design or adjust something for a particular purpose or go...
to be extremely angry
to confront someone with a problem or difficulty
to stop doing something, often a bad habit
to formally present a proposal or resolution for discussion