Are they orthogonal or complementary?

它们互不相关还是存在互补关系？

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In many developed countries, 70% to 80% of the population has used some form of alternative or complementary medicine (e.g. acupuncture).

在许多发达国家，70% - 80%的人口使用某种形式的替代或补充医学(例如针灸)。

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Pelvic packing or angiography: competitive or complementary?

骨盆填塞或造影：相互竞争还是相辅相成？

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Traditional cameras use either charge-coupled devices (CCDs) or complementary metal oxide semiconductor (CMOS) chips, which capture images on a grid of millions of pixels.

FORBES: Magazine Article

It also means helping to connect people who have the same or complementary passions, so that they can more rapidly learn from one another and accelerate their performance improvement.

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Bernstein's best bet may be to find a strategic partner in a similar or complementary service -- an alliance that can contribute money, experience, sales and marketing expertise, even new clients.

FORBES: The next level