as a general idea or plan, although the details are not yet established or clear
原则上
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the government agreed in principle to a peace plan that included a ceasefire .政府原则上同意了一项包括停火在内的和平计划。
used to indicate that although something is theoretically possible, in reality it may not actually happen
在理论上,据设想(实际上未必发生)
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in principle, the banks are entitled to withdraw these loans when necessary .理论上,银行在必要时有权收回这些贷款。