Acchan
abbr. Allied Command Channel 盟军指挥系统（北约）
🗣️ 情景例句
I've never been there, Robbie,
我从来没有去过那儿， Robbie
I expect so.
我料想是这样。
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。