| 1 | The Mars rovers, of course, operate mostly by visual input. | |
| 2 | One who walks from place to place; an itinerant. | |
| 3 | On the keyboard , one of my fingers is a stroller too . | |
| 4 | The enrolled jolly stroller polled on the trolley. | |
| 5 | Quite how quickly the shift can occur was learnt by Pete Conrad, the third man to walk on the Moon (and the first to fall over on it). |