偶蹄动物

例句：

1. 1. Cows are an important source of milk and meat for humans.
   奶牛是人类重要的奶和肉来源。
2. 2. The camel is a unique animal that can survive in harsh desert conditions.
   骆驼是一种独特的动物，能在恶劣的沙漠条件下生存。
3. 3. She decided to adopt a dog as a companion for her aging parents.
   她决定收养一只狗作为她年迈父母的伴侣。