Because of the need for complete secrecy and the lack of any direct communication facilities between Beijing and Washington, I knew that we would have no word from Kissinger while he was in China.(Passage 3)

【参考答案】

出于完全保密的需要以及当时北京和华盛顿之间并未建立直接的通讯，我知道基辛格在华期间我们无法从他那获得任何信息。