EmsleyCOCA²⁵⁴³³⁷⁺⁶BNC⁹¹⁵¹⁷⁺⁸ 基本例句 n.埃姆斯利¹⁰⁰ At that rate of disintegration, John Emsley wrote in“ Nature’s Building Blocks” Oxford,2001, “ it takes over 200 years to reduce it to1 percent of its former level.” 约翰•埃姆斯利在《大自然的积木》2001年牛津版中写道，按照铯-137分解速度，则“需要100年才能降低到以前1%的水平上。” yeeyan