In so far as any inquiry is a secret one , it naturally limits all those engaged in carrying it out from contact with other countries . 就任何一项研究工作都是保密的来说,这自然会限制所有从事此项科研的人们与其他国家的接触。
Are all transactions encrypted and private (所有的交易都是加密和保密的吗? )
This new production technique is very hush - hush 新生产技术是非常谨慎保密的。
Digital proxy signature scheme with privacy protection 一种消息保密的代理签名方案