The apple turn red, the pear trun yellow, the autumn looks like a magician.
苹果红了，梨黄了，秋天像一个魔术师。
Though TRUN can traverse symmetrical NAT, it causes network delay because packet needs to transmit through TRUN server.
TRUN虽然能够穿越对成型的NAT，但由于报文要通过TRUN服务器转发，这又增加了网络延迟。
Though TRUN can traverse symmetrical NAT, it causes network delay because packet needs to transmit through TRUN server.
TRUN虽然能够穿越对成型的NAT，但由于报文要通过TRUN服务器转发，这又增加了网络延迟。
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