英英释义：to strengthen or support (something) from below 

本意表示“用砖石结构等从下方支撑（建筑物）”，也常引申表示“巩固、支撑”“构成…的基础”。underpin 是一个灵活、高频、形象的表达，经常可以用来替换 justify, support 等词.

sentence

1. The report is underpinned by ample research. 

2. Our values underpin our long-term success and happiness. 

3. You might think that America’s clout comes from its 11 aircraft-carriers, 6,500 nuclear warheads or its anchor role in the IMF. But it is also the central node in the network that underpins globalisation.（这里的 underpin 写出了美国在全球化中的位置）

4. American officials also made clear that they view Huawei as a threat to national security, since it builds the telecoms networks that underpin modern societies. 

5. The security of such systems is likely to be protected by blockchain, the technology that underpins cryptocurrencies like Bitcoin.

practice

他用详实的数据支撑他的观点。 

He underpinned his points by using ample data.

参考翻译：He presented solid data/figures to underpin his argument.