1，总结2的倍数有什麽特殊共三条
1、都是偶数；2、都是相邻的偶数；3、末尾数以2、4、6、8、0循环；
2，事半功倍的英文怎么说
to get twice the result with half the effort 事半功倍
事半功倍 [shì bàn gōng bèi]基本翻译yield twice the result with half the effortby doing half the work, one will get double the result.get twofold results with half the efforthalf the work with double results网络释义事半功倍:well begun is half done
