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。

• submersible
• submersion
• submission
• submissive
• submit
• subnormal
• subordinate
• suborn
• subpar
• subplot
• subpoena
• subprime
• subscribe
• subscriber
• subscription
• subsection
• subsequence
• subsequent
• subsequently
• subservient
• subset
• subside
• subsidence
• subsidiarity
• subsidiary