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Hi Stefanie, unfortunately I cannot provide a translation (that's why I refrained from posting an answer) but I found an explanation which might be of interest to you or other answerers who know more about the subject:
Thanks for your note. The above items are considered waste in the context of Lean Manufacturing. Sleeping material refers to material that is not used and takes up space. Tall racks and storage areas means that the workers need more time to get/bring stuff from/to these racks. Complex machines might refer to more time that is needed for the workers to learn how to deal with these machines.