How to Use "underpinning" with Example Sentences

1. Underpinning resilience in china 's labor markets are profound demographic changes .
2. Harrington 's book became an underpinning for the war on poverty .
3. China has used its currency reserves to buy $ 27 billion in japanese bonds and other securities this year , underpinning the yen 's rise , and raising concerns in japan .
4. There are other factors underpinning valuations .
5. These two tenets were the indispensable theoretical underpinning of the 1920s bull market .