PLease perform the backup function first

what is the function of the first paragraph什么意思 Please open JavaScript function,also install the latest Flas The first European____(perform) of the opera was made in 198 英语翻译British doctors have helped to perform the world's first The ____(perform) always ____ (perform) well 帮忙看看这句是什么意思perform there function well 急用 英语作文:how to perform first aid please read the first的后面是什么 英语翻译Rules:Please Backup files before:- your Savegames- gta.d What is the function of GATT Please tell me in English The function define empty! give me the first and also the last chance,please