millet stem maggot

例句：

1. 1. The farmer noticed the unusual smell coming from the field.
   农民注意到田野里有一种不寻常的气味。
2. 2.The millet stem maggots were causing a lot of damage to the crops.
   米粒茎蛆对庄稼造成了很大损害。
3. 3.The farmers had to use special chemicals to control the rice stem maggots.
   农民不得不使用特殊的化学物质来控制稻谷茎蛆。