熟练掌握, 在...之上, 完全控制着, 另外, 紧接着

on top of the world on top always on top top line of teeth at the top of top of the heap housing of the open top top at the top of one's lungs to the top of one's bent talk off the top of one's head get on top of on top of the world on top on-top altitude clearance always on top Do not stake on top top-gear speed on gradient top of tooth top of saddle top of page covering of top roller