| 单词 | theory |
| 释义 | theory n. (pl. -ies) 1. a supposition or system of ideas explaining something, esp. one based on general principles independent of the particular things to be explained (opp. HYPOTHESIS) (atomic theory; theory of evolution). 2. a speculative (esp. fanciful) view (one of my pet theories). 3. the sphere of abstract knowledge or speculative thought (this is all very well in theory, but how will it work in practice?). 4. the exposition of the principles of a science etc. (the theory of music). 5. Math. a collection of propositions to illustrate the principles of a subject (probability theory; theory of equations). Etymology: LL theoria f. Gk theoria f. theoros spectator f. theoreo look at |
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