An invalid escape sequence error is generated.

生成了一个无效的转义序列错误。

youdao

Since the deleted recordId is not reused so as to maintain the original sequence in records, the record is marked as invalid by a distinctive string pattern.

因为为了维持记录中原始的顺序所删除的 recordId不能重用，所以这个记录通过特有的字符串模式标记为无效。

youdao

A validation rule to handle invalid messages in sequence diagrams has been introduced. The constraint for this rule can be found in this UML 2.2 specification

序列图中处理无效消息的验证规则会得到引入。

youdao