医院狐臭:Some necessary files are missing .piease reinstall them. 是什么意思呀？

Some necessary files are missing .piease reinstall them. 是什么意思呀？ necessary 是什么意思? 安装不了啊,"some installation files are corrupt.Please download a fr ZIP supports that some files are encrypted while the others are not. 怎么翻译阿 Necessary+for还是to? necessary 的意思 Are white lies necessary? Are rules necessary? it is necessary ......是什么意思？ SOME PAPERS