roving machine

例句：

1. 1. The children are roving around the park in the sunshine.
   孩子们在阳光下在公园里闲逛。
2. 2.He roved through the streets, lost in thought.
   他在街头徘徊，陷入了沉思。
3. 3.She roved through the countryside, enjoying the fresh air.
   她漫步在乡村，享受着新鲜的空气。