impalas is impala's Plural Form

impala

US [ɪmˈpælə]
UK [ɪmˈpɑːlə]
  • n.【动】黑斑羚 (Aepyceros melampus)
  • Web黑斑羚图片;非洲羚羊
Plural Form:impalas  
n.
1.
【动】黑斑羚 (Aepyceros melampus)