单词 jacobsen 例句 DEFINITIVE EXAMPLES 权威例句〔analysis〕Jacobsen based his conclusion on an analysis of the decay of samarium-147 into neodymium-143.雅各布森得出的结论是基于对钐-147衰变成钕-143所作的分析。柯林斯高阶 英语例句辞典收录了559068条英语例...