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。

• sperm
• spermato-
• spermatogenesis
• spermatozoon
• spermicide
• spew
• sphagnum
• sphere
• spherical
• spheroid
• sphincter
• sphinx
• Sphinx's Riddle
• spice
• spick-and-span
• spicy
• spider
• spidery
• spiffing
• spiffy
• spigot
• spike
• spiky
• spill
• spillage