mustard insect

例句：

1. 1. The mustard insect is a common pest in many gardens.
   芥末虫是许多花园中的常见害虫。
2. 2. The gardener sprayed the mustard insect with insecticide to control it.
   园丁用杀虫剂喷洒了芥末虫来控制它。
3. 3. The mustard insect is responsible for spreading the disease from plant to plant.
   芥末虫负责从植物到植物传播疾病。