| 1 | This agreement will smooth the way to peace. | |
| 2 | A nurse smoothed out the sheet and fluffed up the pillow. | |
| 3 | She flattened out the crumpled letter on the desk. | |
| 4 | A two-step flattening algorithm of polygonal surfaces was proposed. | |
| 5 | The children are taught to flatten the empty milk cartons and recycle them. |
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