shortage既是可数名词，也是不可数名词。
shortage：n.不足；缺少；短缺；
复数： shortages
相关介绍
There is no shortage of things to do in the town.
城里不愁找不到活儿干。
They face a desperate shortage of clean water.
他们面临无污染水源的严重短缺。
There's a shortage of hospital beds.
医院床位短缺。
There's a great shortage of resource materials in many schools.
很多学校物资都十分短缺。
