You must select at least one joint 这句是什么意思?

You must select at least one joint 这句是什么意思? you must select the other product是什么意思啊 Yuo must select a profile before you can continue You must install MATLAB with your other products.Please select MATLAB You must select a folder where MATLAB is already installed.误 weblogic 部署时报You must select an application before continuing是什么原因?该怎样解决? Your Message must be between 10 and 160 characters.You must supply a valid country to enter the competition.You must select a country.三句各是什么意思?急! what must you do at a red You must come to school at seven. You must be excellent at sports.翻译 用you must .at school造句 You must be at least 13 to You must have at least onecomputer opponent You must withdraw at least $10.00 you must select the option that you wish to add to the basket这句话啥意思 GMAT报名时出现：you must select apiontment date and time before you can continue the next screen 悬 英语翻译Select the switch position at which you hear the most bass. 活死人之地Yuo must select a profile before you can continue这怎么处理,一直玩不成.别捣乱