The thesis is put forward in this social environment.

本论文是在这一社会背景下提出的。

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This can present certain social concerns, and while it is important to let the child explore his new environment, it goes without saying that appropriate social behaviors must be taught.

这可以引起一定的社会关注，然而，最重要的是让孩子自己探索新的环境，不言而喻，必须教孩子这种适当的日常行为。

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Behind this environment are the great social processes of migration and modernization that produced that new urban form, the metropolis.

在这种环境背后是移民和现代化的重大社会进程,所带来的新的城市形式，即大都市。

耶鲁公开课 - 现代诗歌课程节选

What Dr Cole seems to have revealed, then, is a mechanism by which the environment (in this case the social environment) reaches inside a person's body and tweaks its genome so that it responds appropriately.

ECONOMIST: The reason loneliness could be bad for your health

To achieve this without wreaking havoc on the country's natural environment and social fabric is hard enough.

ECONOMIST: The next move is anybody��s guess

This survey was conducted to gather public opinion on development, environment and social issues.

UNESCO: Opinion survey