慢速英语:大批欧洲国家暂停使用阿斯利康疫苗 欧洲药管局仍称其安全

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indication –n. something that points out or shows

clot –n. a piece of dried blood that stops blood flow in part of the body

convinced –adj. to believe strongly in something

benefit –n. a good or helpful result or effect

precautionary –adj. describing something done to prevent harm, danger or trouble

adverse –adj. bad or favorable; not good