常量/NNEconomyN常量NEconomy|TRADE_PATH_UPSTREAM_COST_MULTIPLIERNEconomy|TRADE_PATH_UPSTREAM_COST_MULTIPLIERloading_screen/common/defines/00_defines.txt:1978moving upstream is still better than over land定义loading_screen/common/defines/00_defines.txt:1978-0.2