n.申诉人，原告

原形：complainant复数：complainants

The complainant filed a lawsuit against the company for breach of contract.
投诉人因公司违反合同而提起诉讼。
The complainant's grievances were thoroughly investigated by the ombudsman.
投诉人的不满得到了公正调查员的详细审查。
The complainant alleged that they were unfairly dismissed from their job.
投诉人声称自己被不公平地解雇了。
The complainant submitted a written complaint to the police about the theft.
投诉人向警方提交了关于盗窃案的书面投诉。
The complainant requested a refund for the defective product.
投诉人要求对有缺陷的产品退货。
The complainant was satisfied with the resolution provided by the customer service.
投诉人对客户服务提供的解决方案感到满意。
The complainant claimed discrimination based on their race in the workplace.
投诉人声称在工作中受到了种族歧视。
The complainant expressed concern over the noise pollution from the nearby construction site.
投诉人对邻近建筑工地的噪音污染表示担忧。
The complainant's appeal was rejected by the higher authority.
投诉人的上诉被上级机关驳回。
The complainant cooperated fully with the investigation, providing crucial evidence.
投诉人积极配合调查，提供了关键证据。