It's not just the most physically demanding jobs that can lead to serious injuries. Working with a seemingly harmless mouse and keyboard can cause chronic injuries just as easily as hauling a load of cement.

　　不是只有从事体力劳动的工作才会对身体造成严重的伤害。和看似无害的键盘鼠标亲密接触也能轻易的造成和拉一车水泥一样的慢性伤害。