メンテナンス

(1)periodic maintenance on a car or machine; "it was time for an overhaul on the tractor"

(2)自動車や機械の定期的な維持管理

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

(4)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

(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)