塑料波纹管

　　A square magnet skitters across a bare courtyard, watched by a puppet from the window. It gradually attracts iron filings, which progressively coat the entire exterior of the building. 　　The puppet turns from the window and looks in a bowl on the table in front of him. It is also full of iron filings, swaying in a similar motion. As dozens of spoons emerge from the wall behind hi... (展开全部)