A total of 12 litters of neonatal piglets were randomly divided into four groups, two groups with creep feed and the other two without as the controls.是什么意思_A total of 12 litters of neonatal piglets were randomly divided into four groups, two groups with creep feed and the other two without as the controls.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句