animal

n.[C]

1. 动物
   Human beings are social animals.

   人是社会性的动物。

2. 兽；牲畜
   Horses can be used as pack animals.

   马可以用作驮畜。

3. 畜牲般的人；残暴的家伙
   The man was thought to be an animal because he behaved in a rough and unacceptable way.

   大家把这人当作畜牲，因为他行为粗鲁，令人难以接受。