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do + Y0 _7 T/ _" M6 \/ h- k, | if backfire1.ready and backfire1.cont.Attribute="warmup" and backfire1.cont.name="mar" and quench3.empty ) V1 ?) b% d# {5 ]8 a then backfire1.cont.move(quench3); " n2 l' {8 b. J- D end; " y) T- [$ r# v# U7 U3 cend; 4 a) g c7 l/ q% e4 X1 e, a 0 A7 H9 U1 I* a运行的时候总是跳出错误提示:Unknown identifier Attribute; X& o ]% I: e6 V 4 {5 Q2 T% ^1 E! e. f( e+ [$ _请问前辈们这是为什么?怎么修正?