com-, 强调。-plect, 编织，组成，词源apply,implicate.即多成分的，复杂的。

complex (adj.)

1650s, "composed of parts," from French complexe "complicated, complex, intricate" (17c.), from Latin complexus "surrounding, encompassing," past participle of complecti "to encircle, embrace," in transferred use, "to hold fast, master, comprehend," from com- "with" (see com-) + plectere "to weave, braid, twine, entwine," from PIE *plek-to-, from root *plek- "to plait" (see ply (v.1)). The meaning "not easily analyzed" is first recorded 1715. Complex sentence is attested from 1881.

complex (n.)

1650s, "a whole comprised of parts," from complex (adj.). Psychological sense of "connected group of repressed ideas" was established by C.G. Jung, 1907.

1. I had a persecution complex and thought people were conspiring against me.

我有过被害情结，认为大家都在密谋暗算我。

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2. In this new book, Harrison brilliantly disentangles complex debates.

在这本新作中，哈里森巧妙地理顺了那些纷繁复杂的争论。

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3. Today's complex buildings require close teamwork between the architect and the builders.

如今的建筑结构复杂，需要建筑师和施工人员密切协作。

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4. The causes are a complex blend of local and national tensions.

原因很复杂，既有地方性冲突也有全国范围的紧张局势。

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5. Our culture is more complex than he knows. Wheels within wheels.

我们的文化比他所知道的要复杂得多，相当庞杂。

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