He advertised the imperishability of the product.他们宣传那种产品的耐用性....

n.不灭，不死，不朽...

imperishability的音标：imperishability的英式发音音标为：[ɪmperɪʃə'bɪlɪtɪ]imperishability的美式发音音标为：[ɪmperɪʃə'bɪlɪtɪ]...