1. In so far as any inquiry is a secret one, it naturally limits all those engaged in carrying it out from effective contact with their fellow scientists either in other countries or in universities,
    任何一项研究都涉及到保密，那些从事科研的人员自然受到了限制。他们不能和其他国家、其他大学、

2. In some countries no major business is conducted without eye contact, requiring face-to-face conversation.
    在有些国家里, 没有当面接触就做不成大生意, 需要面对面的交谈。

3. In many cultures the most common form of first contact between two people is a handshake.
    在许多文化环境里，两个人初次接触的最常见的方式就是握手。

4. It is common to look up, down, and all around when speaking to others, and not have eye contact at all times.
    而你自己对别人说话时，向上、向下、以及向四周看看，这都很平常，你不必一直保持与对方目光的接触。