China's defense expenditure is low in relative terms,as well as in absolute terms. 中国国防支出的低水平，不仅反映在国防费的绝对值上，而且也反映在国家国防负担的相对比例上。
The paucity of nitrogen suggests that the heavy elements came mostly from high-mass stars, which produce less nitrogen relative to other heavy elements than low-mass stars do. 氮的匮乏，代表重元素大多来自于大质量恒星，因为大质量恒星所产生的氮与其他重元素的相对比例，通常较小质量恒星的少。
