慢速英语:Mixture of Safe Chemicals May Cause Cancer

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expose – v. to cause (someone) to experience something or to be influenced or affected by something : exposure is the noun

potential – n. a chance or possibility that something will happen or exist in the future : potential can also be used as an adjective

task force – n. a group of people who deal with a specific problem

villain – n. someone or something that is blamed for a particular problem or difficulty

simultaneously – adv. happening at the same time: simultaneous is the adjective