可数。
复数是infrastructures英[ɪnfrəst'rʌktʃəz] 美[ɪnfrəst'rʌktʃəz]n. 基础结构; 基础设施( infrastructure的名词复数 ); 行政机构; 秘密机构;[例句]Health services and infrastructures in that country were already weak before the earthquake struck.在发生地震之前,该国的卫生服务和基础设施已很薄弱。
infrastructure是可数名词,infrastructures中文意思是n. [建]基础设施;下部构造;基本建设(infrastructure 的复数)
As a result, the pressure to build new water infrastructures has diminished over the past two decades.因此,在过去的二十年里,修建新的水利基础设施的压力已经减少了。