Translation 　　[min:sec] 　　[00:04] this is how a simple electrical mechanical “hitter-knocker” works 　　[00:18] this is how a cherry-”kapacitron”(???) works 　　[00:23] this is how a dyfusional pimbdziaula works 　　[00:30] this is how a electro-”cabbager” works 　　[00:38] this is how a steel-koziówka(???) works 　　[00:45] this is how a safety pin works 　　[00:49] and other very very-complex inventi... (展开全部)