必要な経費だと思っていても、さらにそれを吟味し合理化することを怠らないようにしたい。(合理化)(松下幸之助の言葉から)
Although things are considered to be necessary costs, you should examine them from another viewpoint and rationalize the system. (rationalization)
Although things are considered to be necessary costs, you should examine them from another viewpoint and rationalize the system. (rationalization)