to look at (a person, thing) carefully in order to learn something; to put questions to (a person) in order to test knowledge or get information

analyse, test

to gain knowledge of, become skilled in, (a subject being studied, a particular activity)

acquire information

to think about something carefully

think about seriously

(of wine) heated with spices added

think about seriously

to read (something) carefully

check out; examine

to look et and (be able to) understand (something written or printed)

look at and understand written word

to make a detailed examination of (something)

examine closely

to put (something), separate (something) by putting, through a sieve; to examine something carefully

take out residue; remove impurities