| When problems occurred during the launch, it was necessary to abort. |
| The old analogy likening the human mind to an imperfect mirror, which modifies the images it reflects, occurred more than once to Odo. |
| The book describes the changes that have occurred in the landscape over many millennia. |
| He was utterly bewitched and bewiled by her beauty, and upon the following day an opportunity to prove his devotion occurred. |
| Or perhaps something unusual occurred in the current period that you can't count on to repeat itself. |
| The great deflation of the northern economy occurred with the rupturing of the Mackenzie Valley pipe dream. |
