| How doddery old pensioners manage to keep track of that darn game, I'll never know. |
| A Gantt chart like this can be used to keep track of progress for each activity and how the costs are running. |
| The Geminian influence may make it difficult to keep track of where your man's going. |
| But officials admit they cannot keep track of how much is exported, as few are willing to pay export taxes or declare their income. |
| Their job is to keep track of aircraft while they are en route or during the high-altitude cruise phase of their flights. |
| We found that parental males keep track of how many sneaker males they see loitering near their nests during spawning time. |
