51.   The ship is designed to land on a traditional runway or a smooth unpaved surface.

52.   The smooth plastic surface was great for wet gear, but it set my groceries sliding.

53.   The Soundbug is a mouse-size device with a suction cup that can be attached to any smooth surface.

54.   They are self-adhesive sandpaper-like sheets that adhere to smooth surfaces.

55.   They leave you with a smooth surface that can be painted or papered.

56.   They are used to smooth surfaces, square up the ends of boards and shave the edges of doors or windows to make them fit their frames.

57.   This will break up the smooth surface and give you some traction.

58.   To maintain a smooth surface, flood the rink once a day in the evening, if it is not windy.

59.   To achieve a perfectly smooth surface, it is essential that you fill the pores of the wood.