单词complementariness
So in the social control over ecological environment, strong complementariness exists between natural and social sciences.
在生态环境的社会控制上，自然科学和社会科学具有很强的互补性。
However, there is also some complementariness in the bilateral trade, which shows a intensive trend.
在竞争的同时，两国贸易也存在一定互补性，且有逐渐增强的趋势。
Formal finance and informal finance: comparative cost advantage and institutional complementariness
正规金融与非正规金融：比较成本优势与制度互补
On the Complementariness between Imagination and Logic in Translation
论翻译思维的二维互补