| We can only view parts of it at a time and have to continually update stale parts of the view. |
| I think, with practice, I may be able to relax for as much as two hours at a time by the end of the week. |
| He vaulted up the stairs two at a time, and knocked on the door twice before entering. |
| Now we are not talking about logistics, because there can only be one urgent claim at a time. |
| After five blocks he went through the door of the hotel and climbed the stairs two at a time. |
| The hostel houses six people for up to six months at a time, and turns away an average of one person a day. |
