(busily) involved
She seems very active, but she has lots of concerns.
at the same time
during the same moment
They took a day off at the same time.
distance
the space between things, places etc
It is difficult to judge distance when driving at night.
housework
the work such as cleaning, washing, and ironing that you do in your home
My brother doesn't do any housework at all.
keep fit
건강을 유지하다
I have started to exercise to keep fit.
rest
a (usually short) period of not working etc after, or between periods of, effort; (a period of) freedom from worries etc
She ate the rest of her meal in silence.
simple
easy to understand
It is just a simple question to answer.
stair
the things that are used to go up in a building
He fell down the stairs.
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