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For the PST three years, I have served as a private secretary to Mr.
在过去三年，小的一直担任唐悌先生的秘书。
youdao
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Article 13 PST is a common task of the society as a whole.
第十三条科普是全社会的共同任务。
youdao
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Article 13 PST is a common task of the society as a whole.
第十三条科普是全社会的共同任务。
youdao