作废

作废 [zuò fèi]

1. ■ cancel; delete; cancellation; nullify; become invalid:

宣布作废 declare invalid;

过期作废 become invalid after a specified date

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常用词组

1. ■ 作废（字）符 cancel character; ignore character; delete character;

2. ■ 作废码 cancel code; reject code;

3. ■ 作废信息 cancel message;