If placed in the refrigerator, not more than 24 hours.

若放在冰箱冷藏，则不能超过24小时。

youdao

After cooled, placed in the refrigerator cool look better.

稍凉后，放入冰箱中冰镇一下更好。

youdao

Stored in normal temperature, and in a cool, ventilated, dry place, avoid direct sunlight, Please seal placed in the refrigerator after opened.

常温保存，并置于阴凉通风干燥处，避免阳光直照，拆封后请置于密闭容器内保存，以防受潮结块。

youdao

The milk goes directly from the goat into a container that is then placed in the refrigerator to keep the milk cold.

VOA: special.2010.07.20

Wrapped loosely in a tea towel and placed in an open plastic bag, a fresh bunch should last about a week in the refrigerator.

WSJ: Watercress, Springtime's Superfood