insulating sleeve

例句：

1. 1. This insulating sleeve keeps my hands warm on cold days.
   这个绝缘套袖让我在寒冷的日子里手部保持温暖。
2. 2. The engineer used an insulating sleeve to protect the cable from damage during installation.
   工程师使用绝缘套袖来保护电缆在安装过程中免受损坏。
3. 3.The firefighters wore insulating sleeves to prevent their gloves from catching fire.
   消防员穿着绝缘套袖，以防手套被火焰烧伤。