Its scientists shoot, with their rockets, for the moon; its films spread Hollywood's culture around the globe; its athletes break world records; even its wines now rank with the best of France's.
它的科学家将火箭发射到月球；它的电影将好莱坞的文化传播到全世界；它的运动健儿打破了世界纪录；它出产的美酒可与法国的顶级佳酿并驾齐驱。
If a field virus is present in the house, it will probably break through maternal antibody and start to spread before a traditional vaccine can even start to be effective.
如果IBD野毒存在鸡舍，它就有可能突破母源抗体，在传统疫苗起效前开始传播。
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