They are worried about prospective changes in the law.

他们担心即将修改法律。

《牛津词典》

Are any of these more likely to happen if you are wearing suede shoes or are about to set off for a job interview or meet your prospective parents-in-law?

是否这些事情更有可能是发生在当您正穿着一双软跟鞋或者是刚刚想要去参加一个就职面试或是去见您未来公婆？

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The other possibility is that her prospective mother-in-law has already treated her like a daughter because she is quite fond of her.

另一种可能是，准婆婆已经把她当女儿看待了，因为她很喜欢赵丽颖。

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When the Civil Rights Act was being debated in 1963, she wrote to Robert Kennedy, the attorney-general, to ask whether the prospective law would make it easier for her to go home.

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The prospective suit concerns the law, signed by Mr Scott on May 31st, that requires all adult applicants for cash benefits from Florida's welfare system to be tested.

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But lawyers for Hamdan contend that the law was prospective, and was never intended to cover the Hamdan case and others in the pipeline that test the very structure of the proceedings at Guantanamo.

NPR: High Court Hears Challenge to Military Tribunals