| 1 | The flowers were touched by the frost . | |
| 2 | It can be used for devising systems to protect against frost damage. | |
| 3 | The most frequent effect of high temperature on organisms is dehydration. | |
| 4 | Two hundred years ago, Germany suffered suddenly hit the vineyards of ShuangHai. | |
| 5 | Winter wheat plants are prone to spring frost injury once strong cold air invades. |