1. The fact that the nearby city has a weakening economy does not prove that (does not support the claim that/does not ensure that/lends no strong support to the conclusion that) the city will not contribute significantly to tax revenues.

结构：1) The fact that … does not prove that …

2) The fact that … does not support the claim that …

3) The fact that … does not ensure/guarantee that …

4) The fact that … lends no/little support to the conclusion that …

The fact that the employment-cost index rose only modestly in the three months to June 2000, lends support to this view. (the Economist, “Greenspan lays out his cards”, July 29, 2000)

出处：

翻译：邻近城市的经济实力不断削弱并不意味着他们就不能对税收做出重大贡献了(体会“瘦死的骆驼比马大”这句话)。