1. 岛国性质：insular 海岛的 | insularity 岛国性质 | insulate 使绝缘

2. 绝缘性：Halogen free 无卤 | Insularity 绝缘性 | Retardant 阻燃剂

3. 偏狭：package tour 一栏子计划 | insularity 偏狭 | cater exclusively 排他的

4. 岛国：大公国 grand duchy | 岛国 insularity | 进贡国 tributary

noun

1. the state of being isolated or detached

e.g. the insulation of England was preserved by the English Channel

Synonym: insulationinsularismdetachment