to demonetize
01
废止货币流通, 宣布无效交易
to cease to use something as a legal currency or declare it invalid for transactions
例子
The company decided to demonetize its old gift cards to introduce a new, updated system.
公司决定停止使用其旧礼品卡，以引入一个新的、更新的系统。
Some countries have chosen to demonetize certain coins due to their high production costs.
由于生产成本高，一些国家选择停止流通某些硬币。
