尽力投递服务 best-effort delivery service
尽最大努力投递的 Best-Effort Delivery
尽力投递
Best effort delivery
以上为机器翻译结果，长、整句建议使用 人工翻译 。
应尽力保证尽可能稳妥迅速地投递海员邮件。
Every effort should be given to ensuring that the forwarding of seafarers' mail is as reliable and expeditious as possible.
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