rest assured片语KK [rɛst əˋʃʊrd] /ɹɛst əˈʃʊɹd/发音片语1放心、尽管放心、确信Rest assured that your package will arrive before the weekend.请放心,你的包裹会在周末前送到。2请相信、大可放心正式You may rest assured that we treat every complaint seriously.请相信,我们会认真处理每一件投诉。用这个字练口说→