one-way trunk [通信] 单向中继线 ; 单向干线
two-way trunk 双向干线 ; 双向中继线
both-way trunk line [通信] 双向中继线
one way trunk 单向中继线
both way trunk 双向中继线 ; 双路中继线路
both-way trunk 双向中继线
both way trunk circuit 双向中继器
private line two-way trunk circuit 专线双向中继电路
twt three way trunk 三方通话中继
two-way trunk group 双向中继群
Two-Way trunk is the trunk that can be seized at either end which means a traffic may be originated from both side of the trunk.
双向干线是干线可以在任何一端被抓取的干线，这意味着流量可以是来自干线的任何一端。
The elephant, seeing that the crocodile had no way of reaching their goal, raised his long trunk, and took down the hat quite easily.
大象看到鳄鱼没有办法到达他们的目的地，就升起他的长鼻子，轻易取下了帽子。
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