U. S. companies should be able to write off scientific research as a tax credit.
像税收抵免制度一样，美国的公司在科学研究上应该具有勾销债款的能力。
They are able to perform these missions because they operate in uncontested airspace. U.
它们能够执行这些使命，是因为它们在绝对制空权之下开展行动。
They are able to perform these missions because they operate in uncontested airspace. U.
它们能够执行这些使命，是因为它们在绝对制空权之下开展行动。
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