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arsenic acid
We will use arsenic acid in this chemistry experiment.
to use / to employ / to make use of, to apply / to spend
I will work using this laptop.
chemistry (branch of natural science)
He is majoring in chemistry at university.
experiment
We conducted a new experiment in science class.
to do an experiment
We will conduct a new chemistry experiment tomorrow.
(chemistry) arsenate
I learned about the properties of arsenate in chemistry class.
He is an expert in chemistry.
to use one's head
You need to use your head to solve this problem.
use one thing for many purposes / work someone hard
He is using that coat from winter to spring.
nuclear bomb test
It is reported that North Korea has conducted another nuclear bomb test.
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