pivot：中心，枢轴，核心

来自古法语pivot,绞链，门合页。引申词义中心，枢轴，核心等。

• scull
• sculler
• scullery
• sculpt
• sculptor
• sculptress
• sculpture
• scum
• scungy
• scurf
• scurfy
• scurrility
• scurrilous
• scurry
• scurvy
• scuttle
• scuttlebutt
• scythe
• se-
• sea
• seaboard
• seaborgium
• seaborne
• seafaring
• seagull