The beet armyworm, Spodoptera exigua (Hubner), is a polyphagous pest with worldwide distribution mainly in tropical and subtropical regions.是什么意思_The beet armyworm, Spodoptera exigua (Hubner), is a polyphagous pest with worldwide distribution mainly in tropical and subtropical regions.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句