underpin /ˌʌndɚˈpɪn/ verb underpins; underpinned; underpinning
underpins; underpinned; underpinning
Learner's definition of UNDERPIN
[+ object]
: to strengthen or support (something) from below(从下面)支撑,支持,加固 —
usually used figuratively通常用作比喻 — underpinning
/ˈʌndɚˌpɪnɪŋ/ noun, plural underpinnings [count, noncount]