If you have sciatica, this will be very painful, marked by a burning sensation or a feeling of electric shock down your leg or in your upper back.
如果你有坐骨神经痛，那么这会让你疼痛难忍，这个感觉类似于燃烧或者电击，会从你的腿一支传导到你的背部上方。
The basics of Ubuntu will be no shock to a Windows or Mac user: click around the menus and icons at the top of the screen and you’ll find most features you want without a lot of trouble.
Ubuntu的一些基本操作对于Windows或是Mac用户来说并不新奇：点击屏幕上方的一些菜单和图标，你就能轻易的找到大部分的功能。
The basics of Ubuntu will be no shock to a Windows or Mac user: click around the menus and icons at the top of the screen and you’ll find most features you want without a lot of trouble.
Ubuntu的一些基本操作对于Windows或是Mac用户来说并不新奇：点击屏幕上方的一些菜单和图标，你就能轻易的找到大部分的功能。
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