The negative carbon brush damage often occurs in operation.
运行中负极电刷易受损伤。
Damage often occurs slowly, with peripheral vision affected first, and many sufferers do not realise there is a problem until their sight is badly affected.
这种损害进展缓慢，先是影响周边视力，许多患者通常在最初不能意识到眼睛的问题，直到视力收到严重损害才被发觉。
The liver is often able to repair and heal itself following injury or damage and this occurs in one of three ways.
肝脏通常能在损伤或损害后通过三种方式中的一种进行修复和治疗。
The liver is often able to repair and heal itself following injury or damage and this occurs in one of three ways.
肝脏通常能在损伤或损害后通过三种方式中的一种进行修复和治疗。
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