In one study, scientists looked at areas in the US with different levels of bird diversity to see if this affected how likely humans were to be infected with West Nile Virus.是什么意思_In one study, scientists looked at areas in the US with different levels of bird diversity to see if this affected how likely humans were to be infected with West Nile Virus.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句