one-year pre-school compulsory education
...学前一年义务教育；K-2一体化教育 [gap=19444]Key words： pre-school education， one-year pre-school compulsory education， K-2 integrated education ...
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one-year pre-school compulsory education
一年学前义务教育
以上为机器翻译结果，长、整句建议使用 人工翻译 。