现在有很多中端手机都标榜自己支持IP68防尘防水，偶尔也会伴有“无惧水洗”之类的广告词，但实际上，IP68并没有各位想的那么“万无一失”。

These run nicely from 00 to 69, and describe how tightly sealed the device is against solids and liquids. You’ll no doubt have spotted that many new flagship phones have IP68 ratings. This means that ...