wèi / le / yán / cháng / bǎo / zhì / qī / gōng / rén / bǎ / zhè / pī / hǎi / xiān / xuě / cáng / zài / lěng / kù / lǐ为了延长保质期,工人把这批海鲜雪藏在冷库里。To extend its shelf life, the workers kept this batch of seafood in cold storage.