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第三十一条与他同患难，共甘苦。
Article 31 trouble with him, were bittersweet.
youdao
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第三十一条军官每年休假一次。
Article 31 Officers shall be entitled to a vacation every year.
youdao
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第三十一条航空邮件必须经过安全检查。
Article 31 Air mail must go through security inspection.
youdao
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第三十一条航空邮件必须经过安全检查。
Article 31 Air mail must go through security inspection.
youdao