They have become an every day part of our modern day world. Chemicals are present in pesticides, pollution and all kinds of industrial waste.
它们已成为我们现代社会日常生活的组成部分，化学物质存在于杀虫剂、污染物和各类工业废弃物中。
One day part is like three months past. One month thinking is like seven years missing .
一日不见如三月，一月相思如七年。-----白居易。
Where will I find more people like him? By demographics, geography, seasonality, day-part, etc?
我在哪里能找到像他一样的一群人？利用人口统计、地域、季节或日程来区分吗？
Where will I find more people like him? By demographics, geography, seasonality, day-part, etc?
我在哪里能找到像他一样的一群人？利用人口统计、地域、季节或日程来区分吗？
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