ra·tio·nale /ˌræʃəˈnæl/
基本原理
Ra·tion·a·le n. An explanation or exposition of the principles of some opinion, action, hypothesis, phenomenon, or the like; also, the principles themselves.
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rationale
n : (law) an explanation of the fundamental reasons (especially
an explanation of the working of some device in terms of
laws of nature); "the rationale for capital punishment";
"the principles of internal-combustion engines" [syn: principle]