domestic utility的用法和样例：
例句
- Provide a copy of a bank statement, utility bill or mortgage bill to prove your residency.
附上银行月结单，家用水电瓦斯帐单或贷款帐单影本作为地址证明。 - Sekisui Plastics was the first company in Japan to successfully manufacture expandable polystyrene beads using domestic technology.
日本积水化成品工业株式会社是日本第一家用国内技术成功生产出可发性聚苯乙烯颗粒的公司。
