rudiment：雏形，萌芽，基本原理，基础

rude,原始的，-ment,名词后缀。引申诸相关词义。

• sparky
• sparrow
• sparrowhawk
• sparse
• Sparta
• spartan
• spasm
• spasmodic
• spastic
• spate
• spatial
• spatula
• spatulate
• spawn
• spay
• speak
• speakeasy
• speaker
• spear
• special
• specialisation
• specialise
• specialism
• specialist
• speciality