由于基于IP组播的方式受限于硬件的支持，人们提出了基于应用层组播的方式。
Since IP multicast-based approach is limited by hardware support, a new approach that based on application-layer multicast had been proposed.
由于基于IP组播的方式受限于硬件的支持，人们提出了基于应用层组播的方式。
Since IP multicast-based approach is limited by hardware support, a new approach that based on application-layer multicast had been proposed.
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