[] a report written by a group of people chosen to study an aspect of law, education, health, etc., for people to discuss（委员会等的）研究报告，工作文件working papers [] in the US, an official document that enables sb under 16 years old or born outside the US to have a job（指美国 16 岁以下未成年人或侨居者的）工作证，雇用证书