The first human flu virus is isolated at Mill Hill in London.
在伦敦·米尔·希尔分离到第一株人流感病毒。
A house pictured on its own on top of a hill suggests you're feeling isolated and lonely.
若是房子画在山顶上则说明目前你很孤独无助。
A house pictured on its own on top of a hill suggests you're feeling isolated and lonely.
若是房子画在山顶上则说明目前你很孤独无助。
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