study medium on
研究介质：
以上为机器翻译结果，长、整句建议使用 人工翻译 。
"The study brings home the powerful effect that the online medium is having on people's lives, " said Philip Rowley, President of AOL Europe.
BBC: Woman shopping online
The MasterCard study took some of their customers and divided the accounts into low, medium and high spend segments based on their monthly spend prior to introducing the contactless payment methods.
FORBES: Contactless Payments--Bad News for Consumers?
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