保守

(1)the act of sustaining life by food or providing a means of subsistence; "they were in want of sustenance"; "fishing was their main sustainment"

(2)食物で生命を維持する、または、生存の手段を提供する行為

(3)the activity of protecting something from loss or danger

(4)あるものを損失や危害から守る行為

(5)activity involved in maintaining something in good working order; "he wrote the manual on car care"

(6)何かをきちんと使える状態で維持するような行為

(1)