无犯罪记录英语

It depends on country, different countries should have different way to call the file. If you say non-criminal record certificate, people will understand. usually it is issued by the police office. In united states, it is different by different states, however US citizens can consult their China embassy or consulates.

No criminal recordacademic credentialBirth certificateasigned by travel agent

clean [kliːn]n. 打扫; 去垢v. 清理, 出空, 使干净; 被打扫; 做清洁工作; 被弄干净adj. 清洁的; 未使用过的; 未被污染的; 新鲜的adv. 清洁地, 完全地

到百度收在线翻译。