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worry oneself
He was worrying himself about the results of the exam.
worry
He was consumed with worry about his job.
Japanese Language Proficiency Test, JLPT.
I am studying for the Japanese Language Proficiency Test next year.
(organic chemistry, biochemistry) pyruvic acid
In organic chemistry, pyruvic acid plays an important role.
(chemistry) pyruvate
In chemistry class, I learned about the reaction of pyruvate.
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