| 1 | Belling out the tubes will permit a freer passage of air. | |
| 2 | In our case, we generate this flow within the flame. | |
| 3 | Belling out the end of the tube will permit a freer passage of air. | |
| 4 | It provides a continuous flow of air into the throat and lungs while the person sleeps. | |
| 5 | The movement of warmer, moist air to the east leaves drier weather in the western Pacific. |