进行了研究，利用非线性二择一不动点定理建立了问题正解的一个存在性原则。
By using nonlinear alternative fixed_point theorem, a existence principle of positive solutions to this problem are established.
他们也提议对于确保数百万中产阶层不交纳二择一最低税进行调整，后者原先设计用于仅仅对最富裕的美国民众进行征税。
They also propose paying for a fix to keep millions of middle class taxpayers from paying the AMT, a tax that originally was meant for only the wealthiest Americans.
这是一个二择其一的问题。
我承认，假设我是社会学专家，我无法二择其一。但我能够说如果立法机关有足够证据认为有害，答案是可以限制。
I have to admit that if I'm supposed to be a sociological expert, I can't choose between them. But if I can say could a legislature have enough evidence to think there's harm, the answer is yes.
我承认，假设我是社会学专家，我无法二择其一。但我能够说如果立法机关有足够证据认为有害，答案是可以限制。
I have to admit that if I'm supposed to be a sociological expert, I can't choose between them. But if I can say could a legislature have enough evidence to think there's harm, the answer is yes.
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