By arming the human body with the right kinds of antibodies researchers believe they could provide lifelong protection from most influenza strains, and perhaps even all of them.
研究人员坚信通过给人体接种正确的抗体，能够终生免受大部分甚至全部流感毒株的感染。
Protection lasts at least 20 years and should be lifelong.
保护期至少持续20年，应为终身免疫。
Recovery from infection by one provides lifelong immunity against that virus but confers only partial and transient protection against subsequent infection by the other three viruses.
感染一种病毒并恢复后，对该病毒具有终生免疫，但对此后感染的其他三种病毒只有部分和短暂免疫力。
Protection lasts at least 20 years and should be lifelong.
保护期至少持续20年，甚至是终生。
You visit your lifelong best friend to borrow a Pokémon for protection on your trip.
您访问的终身最好的朋友借贷，保护您的旅行神奇宝贝。
You visit your lifelong best friend to borrow a Pokémon for protection on your trip.
您访问的终身最好的朋友借贷，保护您的旅行神奇宝贝。
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