互补 (hù bǔ): 補完的

This couple's personalities are complementary: one is outgoing and talkative, the other quiet and reflective. In ten years of marriage, they have hardly ever argued.

The red team is strong on offense but weak on defense, while the blue team is just the opposite. The two teams complement each other, so the coach decided to have them train together regularly.

This project requires technical skills and creativity to complement each other, so we put engineers and designers in the same group.

Traditional Chinese medicine and Western medicine each have their strengths; they are not meant to replace each other but to complement each other. Many patients receive both types of treatment at the same time.

Language and culture are complementary. When learning a foreign language, understanding that country's history, customs, and values can help you improve your language skills faster.