packet switching does have the problem that it takes a little time to break up the data 「conversations」 into many packets, send them on their different ways and then reassemble them at the other end.
分组交换也有缺点,需要花一些时间将数据「通话」拆分为多个分组,使用不同通道传输这些分组,然后在接收端将分组重新组装。