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。

• suburban
• suburbanite
• suburbia
• subvention
• subversion
• subversive
• subvert
• subway
• subwoofer
• sub-zero
• suc-
• succeed
• success
• successful
• succession
• successive
• successor
• succinct
• succor
• succour
• succubus
• succulent
• succumb
• such
• suchlike