indispensability的音标

This electric drill is a indispensability special equipment at rag trade.该电锁是服装工业不可缺少的专用设备之一.Body and mental state are two aspects of body indispensability, they are mutually to contact interaction.身体与心理是人体不可缺少的两个方面, 他们是...

n.不可缺少...