gōng / zuò / rén / yuán / dǎ / kāi / yóu / dài / kāi / shǐ / fēn / jiǎn / lǐ / miàn / de / yóu / jiàn工作人员打开邮袋,开始分拣里面的邮件。The staff opened the mailbag and began sorting the mail inside.