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RE: Vocab-ability–117 (labor = work) – A More Powerful Vocabulary (earn UpVotes with “Vocab Practice” exercise)
MY VOCAB PRACTICE:
The scientist developed new packaging materials that are bio-degradable in the laboratory.
It was laborious testing thousands of polymers but finally the scientists found one that would work.
The company's scientists collaborated with scientists from the local college to develop the bio-degradable packaging materials.
Good work!