presupposition
預想,假定,前提
Pre·sup·po·si·tion n.
1. The act of presupposing; an antecedent implication; presumption.
2. That which is presupposed; a previous supposition or surmise.
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presupposition
n : the act of presupposing; a supposition made prior to having
knowledge (as for the purpose of argument)