flu shot短语⁵⁶³²⁰ 基本例句 流感疫苗接种 Those who got their flu shot during the past year had a 19% reduced risk for heart attack, compared with their counterparts who did not get a flu shot that year. 与去年未注射流感疫苗的人相比，去年注射流感疫苗的人心脏病发作风险降低19%。 dxy If I’ve already had the flu this year, do I need either flu shot? 如果我今年已感染流感，我是否需要注射任意一种疫苗？ yeeyan