He presented data to underpin his argument.他提供了一些数据来支持他的论点。
Gradually the laws that underpinned (= formed part of the basic structure of) apartheid were abolished.以种族隔离制度为基础的法律被逐步废除了。
When restoring the building, the first priority was to underpin the exterior walls by adding wooden supports along the foundations.修复这座建筑物时,首先要做的是沿着地基给外墙增加木支撑。