I installed Chinese version of Eclipse.When I want to switch to English version,I use -nl en_us option and everything is just ok.

One day,I installed tortoise svn plug-in.In order to configure the svn plug-in,I first use -nl en_us option to start my Eclipse (just as I often do),then I open preference,hoping to see the tortoise in the preference and configure it.The problem is that I can not see tortoise in the preference as supposed.After trying many means to figure out the problem,I get the right answer:do not use -nl en_us option to start Eclipse and you can see tortoise in the preference.You need only to do this once,then you can use -nl en_us option to start your Eclipse as you usually do and you can still see tortoise in the preference.