When the management establishes the mission, it is sort of the starting point for the mission. That is when the management actually concretely gives the mission to the team to perform.
2014年7月26日
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Establish means to create, set up, start; mission can be any kind of important assignment given to someone. It would be easier to translate if you could provide more context.
2014年7月26日
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Terry you need to buy a dictionary and use it instead of having all of us do your homework for you!