例句與造句

1. There are different variations of Rubik's Cubes with up to seventeen layers : the 2?? ( Rubik's Revenge / Master Cube ), and the 5?? ( Professor's Cube ), the 6?? ( V-Cube 6 ), and 7?? ( V-Cube 7 ).
2. It's difficult to find master cube in a sentence. 用master cube造句挺難的