曾在当地村委员会实习过，也曾参加过全国污染源普查工作等，具备了一定的工作能力，也积累了一些经验。

And I also worked in my local village committee, also took part in the national census, other sources of pollution, with a certain degree of working ability, but also accumulated some experience.

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此次普查的目标在于弄清楚全国污染源的数量、区域和地理分布。

The survey is aimed at determining the number, sector and geographical distribution of the country's polluters in the country.

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