there were four powerful means of transmitting and receiving information,为什么要用of.去掉他,现在分词transmitting and receiving information直接作定语行吗

问题描述:

there were four powerful means of transmitting and receiving information,为什么要用of.去掉他,现在分
词transmitting and receiving information直接作定语行吗

means of 短语 .的方式(手段)
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