phone it in
敷衍了事；不認真對待工作或任務
口語·批評敷衍行為
英文釋義
to do something with minimal effort or enthusiasm
例句
He didn't prepare for the presentation and just phoned it in.
典故來源
源自20世紀美國，原指演員通過電話遠程表演，后比喻缺乏投入、敷衍了事。