1. 加强......基础,支持：4. stem from 滋长,源自 | 5. underpin 加强......基础,支持 | 6. underpinning 支持物,基础(建筑物下的)

2. 托换基础;基础加固;托换基础支撑：underpass 隧道;下通路 | underpin 托换基础;基础加固;托换基础支撑 | underpinned pile 托换桩

3. 支撑;托底：underlet 分租 | underpin 支撑;托底 | undertaking 承诺书

4. 巩固：underpayment 不足工资 | underpin 巩固 | underpinning 基础

1. 加强…的基础；巩固；支撑
    If one thing underpins another, it helps the other thing to continue or succeed by supporting and strengthening it.

    e.g. ...mystical themes that underpin all religions...
           支撑所有宗教的神秘主题
    e.g. ...the beliefs underpinning contemporary art.
           支撑现代艺术的一些观念

verb

1. support from beneath

2. support with evidence or authority or make more certain or confirm

    e.g. The stories and claims were born out by the evidence

    Synonym: corroboratebear outsupport