3 sentences

1. 这种药液需要放入冰箱里进行冷藏保存。

   zhè zhǒng yào yè xū​yào fàng​rù bīng​xiāng lǐ jìn​xíng lěng​cáng bǎo​cún.

   This liquid medicine needs to be kept refrigerated in the refrigerator.

   Source: Dong Chinese Dictionary

2. 冷藏是目前保存新鲜蔬菜最常用的技术手段。

   lěng​cáng shì mù​qián bǎo​cún xīn​xiān shū​cài zuì cháng​yòng de jì​shù shǒu​duàn.

   Refrigeration is currently the most common technical method for preserving fresh vegetables.

   Source: Dong Chinese Dictionary

3. 开封后的牛奶请务必冷藏。

   kāi​fēng hòu de niú​nǎi qǐng wù​bì lěng​cáng.

   Please be sure to refrigerate the milk after opening.

   Source: Dong Chinese Dictionary