At least that was one conclusion from an experiment published in a journal called ACM Transactions on Management Information Systems.

至少这是《美国计算机协会信息系统会报》上一项实验得出的结论。

For ski resorts, the profit margin is usually around 15 percent, with ski instruction offering margins of some 30 to 35 percent, according to enterprise intelligence and management information company MobTech.

企业情报和管理信息公司袤博称，对于雪场来说，利润率通常在15%左右，而滑雪教练服务的利润率约为30%至35%。