wheat rust

例句：

1. 1. The wheat rust is a serious threat to the crop.
   小麦锈病对农作物构成了严重威胁。
2. 2. The farmers are trying to control the wheat rust in their fields.
   农民们正在试图控制他们田地里的小麦锈病。
3. 3. The disease has spread rapidly across the wheat fields, causing significant damage.
   这种疾病迅速蔓延到小麦田，造成了严重的损害。