Colors that are opposite each other on the color wheel are considered to be complementary colors (example: red and green).

色轮上相对的两种颜色称为互补色(如红色和绿色)。

youdao

For example, the WS-Security Policy domain will be the only source of information as to whether two security assertions contradict each other or are complementary refinements of each other.

例如，WS - Security策略领域将是作为判断2个安全断言是互相矛盾的还是互为补充的唯一信息源。

youdao