Check for QuickTime Updates 如题~

Check for QuickTime Updates 如题~ check for updates是什么意思? check for duplicates是什么意思 check prices for CD check surrounding for check agreement for check up 和 check for的区别 check for solutions online是什么意思 check for viruses 什么一丝 check和check for有什么区别吗? 是check luggage还是check in luggage还是check for luggage Check CHECK Automatically check for updates once a 请翻译 CHECK FOR H PYORI Check for information provided for application 怎样翻译? Check for information provided for application 的中文意思? check和check for都是检查的意思?有区别么?