1、因为deer是单复数同形的单词，所以复数仍然是deer。

2、汉语意思：鹿。

3、例句：

The deer fell a prey to the lion.鹿被狮子捕食了。

He stalks his victims like a hunter after a deer.他像猎手跟踪鹿一样悄悄跟踪受害人。

Huntsmen chased the deer silently.猎人们悄悄地追捕那头鹿。