A second study, involving ferrets, found the vaccine provided 96 percent cross-protection against a lethal challenge with the drifted Indonesia virus strain.是什么意思_A second study, involving ferrets, found the vaccine provided 96 percent cross-protection against a lethal challenge with the drifted Indonesia virus strain.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句