他想防止气候变暖，但是又阻止nevada州yuc ca山存放核废料的计划，这完全妨碍了核能源的扩展。
He wants to avert climate change, but stymies the expansion of nuclear power by blocking plans to store nuclear waste in Yucca Mountain, Nevada.
犯罪地图和其它线上工具的交互式特性，可能由于不完全或不精确的犯罪报告，而妨碍它们的有效性。
The interactive capability of crime maps and other online tools can hinder their effectiveness, due to incomplete or inaccurate crime reporting.
平坦的闸板底部与阀座之间能够实现全周长阀座密封，避免阀座出现可能淤积流体介质、妨碍阀门完全关闭的底部洞隙。
The flat bottom gate provides full perimeter seating against the seat, eliminating pocket in the bottom of the seat that can trap process media and prevent the valve from fully closing.
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