慢速英语:间谍瞄准美国大学

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exploit – v. to use someone or something in a way that helps you unfairly

sector –n. an area of an economy or group of industries

specific –adj. relating to something particular or special

recruitment –n. the process of getting someone to join a group, organizations or business

pretend – v. to imagine and act out a particular role, situation, etc.

vast – adj. very great in size, amount, or extent