One of the simplest jobs a conservator handles is cleaning the surface of wood, for example, but even here, he can choose to clean it with any of eight different kinds of cleaner, including water, alcohol, olive soap, and even spit. Which is the most appropriate?
就以最簡單的木器表面清潔為例，就有包括水、酒精、橄欖皂甚至「口水」等多種不同的清潔材質可供選擇，至於哪一種最適合？