后臺(tái)區(qū)backgroundplate: 背景板(燈示號(hào)志)backgroundnoiselevel: 背景噪聲級(jí)backgroundprogram: 后臺(tái)程序backgroundnoisee: 環(huán)境音backgroundprojection: 背景投映下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
