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to demonetize
01
使不再作为法定货币, 宣布某物无效用于交易
to cease to use something as a legal currency or declare it invalid for transactions
Example
The company decided to demonetize its old gift cards to introduce a new, updated system.
Some countries have chosen to demonetize certain coins due to their high production costs.
The bank 's policy to demonetize outdated checks required customers to issue new ones.
