活字

He is a walking dictionary.

他是一个活典。

Badly worn type prints poorly.

磨损的活印得不清。

The agriculturist, Wang Chen-ho creations of wood for insertion of success, he also invented the punner racks, with a simple machine, increasing the efficiency of the typesetting.

元代，农学家王祯创制木活成功，他还发明转轮排架，用简单的机械，增加排的效率。