old correspondence still unattended to
... DIRECT ANY CORRESPONDENCE TO 所有通讯应寄往 Old correspondence still unattended to 仍未答复的旧信件 Reply to correspondence quickly 回复迅捷 ...
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old correspondence still unattended to
旧信件仍无人处理
以上为机器翻译结果，长、整句建议使用 人工翻译 。