The inclusion of the write-off of payment arrears, which vary from country to country, means that in practice, ODA resources actually available for development have been smaller than indicated by aid statistics.
把拖欠债务的注销包括在援助之内的做法因国而异，但都意味着在实践中实际可用的官方发展援助少于援助统计数据所显示的金额。