linking duality的用法和样例：
例句
- There is also a comprehensive treatment of optimality conditions, Lagrange multiplier theory, and duality theory.
这门课程也包括了对最适化条件，拉格朗日乘数理论，和对偶理论的综合论述。 - RAPHAEL BOUSSO and JOSEPH POLCHINSKI's work together began at a workshop on string duality in Santa Barbara.
布索与普金斯基的合作始于在美国圣巴巴拉举办探讨弦对偶性的工作坊。
