noun 下载 🔗分享 绝缘体,非导体 Any material that does not conduct electricity; a dielectric Examples : "Electrical outlets are often made with plastic because nonconductors like plastic prevent electric shock. " 插座通常用塑料制成,因为像塑料这样的绝缘体可以防止触电。 material physics electronics science technical 与AI对话词汇游戏阅读练习