Not knowing each other?

彼此不了解？

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Last but not least, city-residents are not only separated from nature but also isolated from each other, even not knowing the name of their next-door neighbour.

最后但同样重要的，城市居民不仅与自然隔绝，而且彼此隔绝，他们甚至不知道隔壁邻居的名字。

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They said goodbye to each other, not knowing that they were never to meet again.

他们互相到别，但是不知道他们这是永别。

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What if a social network evolved around neighbors - people who feel a certain guilt about not knowing each other better?

FORBES: Is the Virtual Neighbor a Match for the Facebook Friend?

The two sides in this debate are always charging each other with not knowing the Constitution, but they are talking about different kinds of knowledge.

NEWYORKER: The Commandments

The role of each business unit becomes blurrier with each new hire and after an internal audit, we found a startling amount of redundant tasks and unfinished projects that were due to each group not knowing what the other was doing.

FORBES: Connect