something a person does to achieve a specific goal or to have fun
My favorite activity during Physical Education class was playing tennis outside in the summer.

seen easily or understood; obvious from appearance alone
It was apparent that the student had studied a great deal for the final exam.

any of the vessels, as arteries, veins, or capillaries through which the blood circulates
The blood vessels transport blood throughout the body.

to state something unproven to be true
She claimed she graduated from Harvard University, but no one believed her.

the condition of not being able to do things in a normal way
Due to his disability, Ron has to use a wheelchair to get around.

to start or begin an organization
We have decided to establish a new department.

a measure of cardiac activity usually expressed as number of beats per minute
To burn calories more efficiently, you need to increase your heart rate and keep it there for at least twenty minutes.

열심히 공부하다
Is it seven o'clock already? I'd better hit the books. I have a test tomorrow.

a older person who has usually reached a specific age
When they turned 65, they became seniors.

excite to action
Massaging your feet can stimulate other parts of your body.