But beyond such instinctual emotions and their predictable behavioral responses, the possibility of more complex animal feelings -- those that entail mental processing -- is difficult to demonstrate.是什么意思_But beyond such instinctual emotions and their predictable behavioral responses, the possibility of more complex animal feelings -- those that entail mental processing -- is difficult to demonstrate.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句