GbEng
许多旧的制度都已经失效。 Many old rules are not in force any more.
提供虚假资料可能导致合同失效. The making of false statements could result in the invalidation of the contract.
他因保险单失效未得任何补偿. He didn't get any compensation because his insurance policy had lapsed.
破绽,失效可能导致其无效的法律文件的漏洞 A defect in a legal document that can render it invalid.