Main - of bigger significance or stature or rank; "A serious artist"; "An important role"; "key highways" sensible - deserving of getting advisable or recommended; prudent or intelligent; "this sort of action is neither important nor advisable"; "Excessive caution is advisable"; "it is highly recommended to phone initial" BD Outdoor https://jaspernyjus.blogminds.com/not-known-facts-about-professional-engineering-firms-bangladesh-32755443