adj.未充分利用的，浪费的

The local library, with its vast collection of books, is an underused resource in our community.
我们社区的当地图书馆藏书丰富，却是一个未充分利用的资源。
Despite its potential to reduce traffic, the carpooling system remains underused in many cities.
尽管拼车系统有减少交通拥堵的潜力，在许多城市中它仍然未得到充分使用。
The government-funded vocational training program is vastly underused due to lack of awareness among the public.
由于公众缺乏意识，政府资助的职业培训项目大量未被利用。
The gym at the hotel is surprisingly underused, even though it's equipped with state-of-the-art facilities.
酒店的健身房配备了一流的设施，却出人意料地少有人使用。
With the rise of e-books, traditional libraries have become somewhat underused, turning into quiet spaces for study and reflection.
随着电子书的兴起，传统图书馆变得有些许闲置，转变成了静谧的学习和思考空间。
The bike-sharing service was launched with great enthusiasm but soon became underused due to poor maintenance.
共享单车服务在推出时广受热捧，但很快因维护不善而变得少人问津。
Many homeowners have underused guest rooms that could be transformed into home offices or creative studios.
许多家庭都有未充分利用的客房，这些房间可以改造成家庭办公室或创意工作室。
The online platform for citizen feedback on public services is highly underused, indicating a gap in communication between the government and the people.
公民对公共服务在线反馈平台的使用率极低，反映出政府与民众之间存在沟通鸿沟。
The community garden, meant to foster social interaction and healthy eating habits, has unfortunately remained underused by residents.
旨在促进社交互动和健康饮食习惯的社区花园遗憾地未被居民充分利用。
Despite being a cost-effective marketing tool, email newsletters are often underused by small businesses in favor of more expensive social media ads.
尽管电子邮件通讯是一种成本效益高的营销工具，小型企业往往更倾向于使用成本更高的社交媒体广告，从而使其未得到充分利用。