Definition: a piece of paper with official information on it Level: A2
请把这份重要文件放在安全的地方。
Please keep this important ___document in a safe place.
我需要签署这份文件。
I need to sign this ___document.
公司将所有机密文件锁在柜子里。
The company keeps all confidential ___documents in a locked cabinet.
