土壤动物的类群数、个体数量与土壤有机质、全氮的含量呈明显的正相关；
The numbers of individuals and groups of soil fauna were significantly and positively related to contents of organic matter and total nitrogen in the soil.
各样地中小型土壤动物类群数、个体数均有明显季节变化，以秋季或冬季最高，春季最低，夏季次之。
The group and individual numbers of meso-micro soil fauna varied with seasons, being the maximum in autumn or winter, fewer in summer, and the minimum in spring.
为了检验结论，研究人员让一群参加者数80张面值100美元的钞票，让另一群人去数无价值的纸。
To examine this, the researchers asked one group of participants to count out eighty $100 bills and another group to count eighty worthless pieces of paper.
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