在第二和第三天，我们在乡下度过了一个愉快的周末。
On the second and the third days, we spent a wonderful weekend in the country.
在春节的第二、三天，我们在乡下度过了一个美好的周末。
On the second and the third days, we spent a wonderful weekend in the country.
在大城镇里，二氧化碳的含量会略高于乡下。
In large towns the carbon dioxide content may be slightly higher than in country districts.
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