考生通过平台（淘宝/微信小程序）支付定金，下单流程透明、支持截图存证。避免只收全款、无法提供平台交易、无真实案例展示的中介，一定选择有资质、有服务协议的平台。The TRF is the standard proof of candidate's English proficiency, which shows candidate's scores for all four skill