淘宝灵符小镇岑一道长:请问”nature of duties”是什么意思

请问”nature of duties”是什么意思 duties of student怎么写？ force of nature sounds of nature 是什么意思？ Nature of International Marketing 翻译，best of science best of nature 翻译，best of science best of nature nature of contact between guest and suppliers love is a force of nature是什么意思 the nature of what is news may change