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》

She waved and called a greeting just as the sergeant of the guard came to the gate. Unable to reply, Leip forlornly watched her disappear in the fog.

她招手向莱普大声问好，可这时恰逢警卫队的中士走到了门口，莱普不敢回答，只能颓然地望着她消失在雾中。

youdao

Here there was no line of giants to push her through; this gate was closed and bolted, and a guard looking wide-awake stood by it.

这儿没有推着她前进的巨人队伍了，大门是关着的，而且上了栓，门卫站在门边很警醒地看着。

youdao

They captured a few people in the street and another guard at the front gate of the government armory.

VOA: special.2009.06.25

A security officer has reported that vehicles were allowed inside because the guard at the AMISOM gate assumed they were with the United Nations.

VOA: standard.2009.09.17

Welcomed by about 1, 000 well-wishers, a military band and tri-service guard of honour, the Queen was given a porcelain model of the Brandenburg Gate and the duke a wristwatch by President Kohler and his wife, Eva Luise.

BBC: NEWS | Europe | Queen honours war dead in Germany

And when a fist has come crashing through the gate of his guard, the otherwise Buddha-calm boxer has appeared flustered.

WSJ: Radio City Fight Night