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VOA慢速英语:研究表明T细胞在对抗新冠病毒方面很重要
2020-07-21来源:和谐英语
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immunity–n. to be unaffected by a disease
negative–adj. a bad reaction
exposed–adj. to be out in the open or available
response–n. an answer or reaction to something
sample–n. a test amount
potentially–adv. possibility
encouraging–adj. a positive sign
optimal–adj. in the best case
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