（六）放射性同位素，是指化学元素中具有相同原子序数，但质量不同且能发生放射性衰变的核素。
第一百零七条 旅客客票是海上旅客运输合同成立的凭证。
，更多细节参见同城约会
South Derbyshire District Council spokesperson said the supplier of food waste collection vehicles was experiencing "exceptionally high demand", making it difficult to get hold of them.
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