"下載" means "download".
Since you want to download videos from this website, you have to download its software "iku" first..
just go to http://c.youku.com/iku/ and click on "立即下载安装" on the right side and you will download "iku". Then you find the video again from "iku", and you can download it.
I hope it's clear enough for you to understand. Have a nice day!
I recommend you use leawo video accelerator. it can download easily and quickly video from many video sharing sites like youtube,myspace,Dailymotion with speeding up function. http://www.google.com/search?hl=en&q=leawo+youtube+downloader&aq=f&oq=&aqi= after you finish download it you still should convert it to other popular formats such as wmv,mp3,mp4, avi,3gp,3gp2 etc. For Windows: http://search.yahoo.com/search;_ylt=A0oGkxPCdUlK9mUB08RXNyoA?p=leawo+flv+converter&y=Search&fr=ytff1-tyc&fr2=sb-top&sao=0
For MAC: http://search.yahoo.com/search;_ylt=A0oGklcpNoVK9QQBhhxXNyoA?p=leawo+mac+flv+converter&y=Search&fr=yfp-t-151&fr2=sb-top&sao=1