单词	principium
释义	prin·cip·i·um (prĭn-sĭpē-əm) n. pl. prin·cip·i·a (-ē-ə) A principle, especially a basic one. [Latin prīncipium; see PRINCIPLE.]
随便看	step on it step on someone's toes step on toes step out stepparent stepparenting steppe stepped-up stepper stepping-off place steppingstone step rocket stepsibling stepsister stepson step stool step/tread on (someone's) toes step turn step up step-up stepwise -ster ster. steradian stercoraceous

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