他们的专业知识和实践经验形成互补，共同解决了许多难题。

The ___complementarity of their expertise and practical experience helped solve many difficult problems.

量子物理中的互补性原理表明，位置和动量不能同时被精确测量。

The ___complementarity principle in quantum physics states that position and momentum cannot be precisely measured at the same time.