| 1. | Up and down drafts ( vertical speed ) up to 30 - 35 meters per second
上升下降气流（垂直速度）达到30到35米/秒。 |
| 2. | Frontal thunderstorm over the field , up and down drafts up to 40 knots
锋面雷雨过境，上升下降气流达40海里每秒。 |
| 3. | Frontal thunderstorm over the field ， up and down drafts up to 40 knots
锋面雷雨过境，上升下降气流达40海里每秒。 |
| 4. | When rain - cooled downdrafts hit warm air near the ground , a low hanging revolving cloud forms beneath the cell ， a tornado is imminent
当雨冷凝形成的下降气流遭遇地表暖气流时- - - - “超级风胞”下方一股低空旋转的云团便已形成，龙卷风就要让我们大难临头了。 |
| 5. | The " eye " is typically of the order of tens of kilometres in diameter . it is essentially a core of descending air where clouds are relatively broken and winds are relatively calm
典型的风眼直径大约有数十公里，实质上是下降气流构成的核心，该区云层稀薄，风力微弱。 |
| 6. | The " eye " is typically of the order of tens of kilometres in diameter . it is essentially a core of descending air where clouds are relatively broken and winds are relatively calm
典型的风眼直径大约有数十公里，实质上是下降气流构成的核心，该区云层稀薄，风力微弱。 |
| 7. | The " eye " is typically of the order of tens of kilometres in diameter . it is essentially a core of descending air where clouds are relatively broken and winds are relatively calm
典型的风眼直径大约有数十公里，实质上是下降气流构成的核心，该区云层稀薄，风力微弱。 |
