slug slot

例句：

1. 1. The slug was crawling across the lawn.
   蜗牛正在草坪上爬行。
2. 2. The slug is a common insect that feeds on decaying plantmatter.
   蜗牛是一种常见的昆虫，以腐烂的植物物质为食。
3. 3. The slug hasa long body and a hard shell.
   蜗牛有一个长身体和硬壳。