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Từ điển Oxford Advanced Learner 8th
guinea pig
ˈguinea pig [guinea pig guinea pigs] BrE NAmE noun
1. a small animal with short ears and no tail, often kept as a pet
2. a person used in medical or other experiments
•Students in fifty schools are to act as guinea pigs for these new teaching methods.
Example Bank:
•She wants Burke to be the guinea pig in the experiment.
•The company used my client as a human guinea pig.
•Twenty students volunteered to act as guinea pigs.
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