tropical chlorosis

例句：

1. 1. The disease is caused by a virus that affects the leaves of plants in warm and humid conditions.
   这种疾病是由一种影响温暖潮湿条件下植物叶片的病毒引起的。
2. 2.The farmers are worried about the spread of this disease among their crops.
   农民们担心这种疾病在他们作物中传播。
3. 3. To prevent the spread of this disease, it's important to maintain good sanitation practices in the farm.
   为了预防这种疾病的传播，在农场保持良好的卫生实践非常重要。