布什允许各州根据自己认为合适的情况支配这笔基金- - -前提是他们必须建立教师责任制制度。
Bush would allow states to spend the funds as they see fit — so long as they establish teacher-accountability systems.
我会考虑，但前提是价钱合适。
This is something that I would consider, but only if the money was right.
在有合适接口的前提下，Web服务提供了修改与完善的自由。
Web services provide the freedom of change and evolution over time, as long as it has an appropriate interface.
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