怎么改变locale里的LANGUAGE=en_US?sudodpkg-reconfigurelocales只改变其他的

$ sudo dpkg-reconfigure locales
选择zh_CN.UTF-8后

$ locale
LANG=zh_CN.UTF-8
LANGUAGE=en_US
LC_CTYPE="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_MOnETARY="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_PAPER="zh_CN.UTF-8"
LC_NAME="zh_CN.UTF-8"
LC_ADDRESS="zh_CN.UTF-8"
LC_TELEPHOnE="zh_CN.UTF-8"
LC_MEASUREMENT="zh_CN.UTF-8"
LC_IDENTIFICATION="zh_CN.UTF-8"
LC_ALL=

难道sudo dpkg-reconfigure locales无法全部改变么？