Passengers can swipe an ID card to pass through a gate before taking a high-speed train.

乘坐高铁前，乘客可以刷身份证通过闸门。

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After driving in silence for a while, we pass through a gate and head uphill into pine woods.

和尚沉默寡言地开着车，过了一会车驶过一处大门，开始向山上的松林深处驶去。

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The guard won't let anyone through the gate without a pass.

哨兵不让没有通行证的人通过大门。

《新英汉大辞典》

After then checking in as normal at the same kiosk, passengers can pass through a miSense automatic security gate by placing their finger on a scanner and inserting their boarding card into the reader.

CNN: Heathrow tests biometrics

So a camera watching a gate through which only a dozen people pass each day would appear to be a much busier gate, with a dozen people using it in a few seconds.

ECONOMIST: Monitor

There was much more at stake for them than there had been for the Groton grads of an earlier day. (How many hours do you think they put in doing homework?) College was a gate through which, once, only the favored could pass.

NEWYORKER: Live and Learn