20.137 出现 126 500 美元差异的原因是：(a) 拟裁撤本次级方案人口股的一个协理人口干事(P-2)，其职能将在现有资源范围内吸收，因此拟议资源减少 125 600 美元；(b) 拟用于公务差旅的资源减少 900 美元。
20.137 The variance of $126,500 relates to: (a) a reduction of $125,600 due to the proposed abolition of an Associate Population Officer (P-2) in the population unit of the subprogramme, the functions of which would be absorbed within existing resources; and (b) a reduction of $900 in proposed resources for travel on official business.