security department安全: safe; secure; safety; securi ...司: take charge of; attend to; m ...国家安全司: national security division nsd核安全司: directorate of nuclear safety核能和安全司: department of nuclear energy and safety下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:安全司,即可在微信中查询翻译