careful; scrupulous; thorough; conscientious; elaborate; deliberate; attentive
念入りな確認が必要な作業だ。
This is work that requires careful checking.
念入りに準備してから発表に臨んだ。
After preparing thoroughly, I faced the presentation.
彼女は部屋を念入りに掃除して客を迎えた。
She cleaned the room meticulously and welcomed the guests.