牛虻

例句：

1. 1. The locusts were swarming around the campsite, causing a lot of trouble.
   蝗虫在营地周围飞舞，造成了很多麻烦。
2. 2. The sandfly bites are itchy and can cause an allergic reaction.
   沙蝇叮咬很痒，可能会引起过敏反应。
3. 3. The locusts are a major food source for many animals in the desert.
   蝗虫是沙漠中许多动物的主要食物来源。