作废的例句（作废在句子中的用法）

• to nullify an agreement 把合约作废
• The engine has been sold for scrap. 引擎被当作废品卖掉了。
• It's an invalid cheque. 这是一张作废的支票。
• The treaty may be considered to be as dead as a doornail. 这项条约可以认为是完全作废了.