And they can watch to see what happens in terms of their interaction with the environment.

观察发生了什么,关于这些物质,和环境的互动。

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because everyone usually keeps their door open. There's a lot of community interaction

因为通常每个人都开着他们的门，这样就有更多的社交，

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An alternative theory is that of Bowlby, which is that they're drawn to their mother for comfort and social interaction as well as fear of strangers.

另一个理论是鲍尔贝提出，他们被妈妈的安慰,和社会互动吸引,同时他们害怕陌生人。

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