One is related to what Freud calls the Pleasure Principle, the other to what he calls the Reality Principle.

一种是和弗洛伊德所谓的快乐原则有关，另一种则与他所说的现实原则有关。

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The ego operates on the reality principle.

自我意识运作的原则是根据现实。

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Although the novels violated the reality principle, they still belonged to the current events novels proceeding from...

虽然小说违背了真实性原则，但从作者所凭有椐、出于公心来看，它们仍属于时事小说。

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And it works on the "Reality Principle."

它所遵循的是“现实原则“

耶鲁公开课 - 心理学导论课程节选

Again, however, the attractive principle faces a murky reality.

ECONOMIST: Slimming the Bretton Woods duo

The DanKam, an augmented-reality app for iPhone and Android, works on the same principle.

WSJ: New Outlook for Colorblindness

Proponents of this holographic principle believe that all of the complexities of reality contain far less information than common sense would suggest.

FORBES: Flatland?