bug developed by genetic engineering

例句：

1. 1. The spider caught a bug on its web.
   蜘蛛在它的网上捉住了一只虫子。
2. 2. The farmer needs to control the bug population in his fields.
   农民需要控制他田地里的害虫数量。
3. 3. The bug bites can cause severe itching and swelling.
   虫子叮咬可以引起严重的瘙痒和肿胀。