关口 meaning in English

1.(必经的处所) strategic pass; gate
2.(关头) juncture

It has great gateways which connect the main roads of north china .
长城有许多关口，这些关口与华北的主要道路相连。
Koch breezed through the three airport metal detectors and into the departure lounge .
科克轻松地通过了三道机场金属探测器关口，进入了候机大厅。
Even stirling bridge, which is the main pass over that river, would be watched with little interest .
甚至这条河的主要关口施德林桥，也一定是马马虎虎地监视着的。
The second will cross taro pass from the west
第二组将穿过西边的太郎关口进发
Patrol the cameroon border through the tandjile pass
通过谭济乐关口到达喀麦隆边界

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