not having a full understanding
The difficult math problem confused me.
decide
to cause something to end with certain results
He thinks about lunch. He can’t decide what to eat.
describe
to give an account in written or spoken words
She is describing the result on the board.
during
from the beginning to the end of something
Many people visit the beach during the summer.
dust
fine dry powder of dirt that collects on objects and surfaces
These winds carry dust.
heart rate
a measure of cardiac activity usually expressed as number of beats per minute
Rebecca’s heart rate was sixty-eight beats per minute.
instruction
a statement of something that must be done, or an explanation of how to do or use something
Perhaps they played ball more for instruction than for fun.
math class
수학시간
rag
A rag is a small towel.
When clothes become very old, they are called rags.
variety
the quality of having many different things or many different types of things
Trade also provides us with a variety of food any time of the year.
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