Know your stuff (no yor staf)

You can tell she really **knows her stuff** about physics.

Idiom Education

Meaning

to be knowledgeable or skilled about something

Meaning Translation

быть осведомленным или опытным в чем-то

byt osvedomlennym ili opytnym v chem-to

You can tell she really knows her stuff about physics.

Можно сказать, что она действительно разбирается в физике.

Mozhno skazat, chto ona deystvitel'no razbiraetsya v fizike.

to have information about something; to be familiar with

a collection of things or materials, typically unspecified or uncountable

used to indicate possession or association

being in a leading or important position in a field

looking at things in shops without buying them

relief after dealing with a stressful situation

to focus on a smaller area or set of options

after an unpleasant experience, you are careful to avoid it happening again

to spend money freely or wastefully