帮我翻译
系统按照数据流向可分为接收方向和发送方向，接收方向接收光线路数据，串/并转换后提取100Mb/s以太网数据通过MII接口输出，提取E1数据块输出给RC7017；发送方向从MII接口接收交换芯片输入的100Mb/s以太网数据，与从RC7017接收到的E1数据合并为150Mb/s的数据，并/串转换后通过光线路发送。
参考答案:System according to the data flow can be divided into receiving direction and the direction of transmission, the receiving direction of the received data lines, string / conversion and extraction 100Mb/s Ethernet data through MII adapter output from E1 data block exports to send RC7017; direction from the MII adapter receiving exchange chips imported 100Mb/s Ethernet, and from RC7017 to receive E1 data into 150Mb/s data and / Cascade converted to optical transmission lines.