機(jī)密
secret; classified;confidential
嚴(yán)守黨和國家的～ strictly guard Party and state secrets/泄漏～divulge secret;leakage of(a state or Party) secret/最高～top secret/～情報confidential information/～情報戰(zhàn)confidential war /～文件classified paper;confidential document; confidential communication