《心灵旅程，未知探索》四氢呋喃对男性的危害

　　The creation of objects from the dried sap of lacquer trees, was a medium invented by the Chinese people. Since even Neolithic times, the Chinese used it to great effect, creating some of the most astonishing works of art in the history of mankind. However, producing lacquer wares was not only extremely labour intensive but also poisonous to the craftsmen, therefore the scale o... (展开全部)