我签订的三年期合同已于上周期满。
版权在作者去世七十年后期满无效。
Copyright expires seventy years after the death of the author.
执照期满时可延期。
And as for taxes, the Bush tax cuts as John said, are set to expire very substantially by the end of 2010.
至于在税收方面,约翰刚才也说过,布什的减税政策,会在2010年底,最终期满失效。
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