Complementary things are different from each other but make a good combination.
双语例句
例：
To improve the quality of life through work, two complementary strategies are necessary.
要通过工作提高生活质量，两个互补的策略很必要。
例：
He has done experiments complementary to those of Eigen.
他已经做了与艾根的实验互补的实验。
2.?辅助性的
Complementary medicine refers to ways of treating patients which are different from the ones used by most Western doctors, for example acupuncture and homeopathy.
近义词
alternative
双语例句
例：
combining orthodox treatment with a wide range of complementary therapies.