plantigrade：脚掌着地行走的，跖行动物

来自拉丁语planta,脚底板，脚掌，grade,行走，步伐。

• overlay
• overleaf
• overload
• overlook
• overlord
• overmanned
• overnight
• overpass
• overplay
• overpopulation
• overpower
• overpowering
• overprint
• overproduce
• overprotective
• overqualified
• overrate
• overreach
• override
• overriding
• overrule
• overrun
• overseas
• oversee
• overseer