Open a gate.

打开大门。

youdao

I made a hasty exit and managed to open the gate.

我匆忙离场，设法打开了大门。

《柯林斯英汉双解大词典》

A great gate swung open, and a crowd of citizens poured in.

一扇大门打开了，一群市民涌了进来。

youdao

It has a gate on it and that gate is in open or close state depending on whether a ligand is present or not.

在这个通道上有个门,这个门是打开还是关闭,取决于配体到来与否

耶鲁公开课 - 生物医学工程探索课程节选

Then a rusty iron gate creaks open and a huge man pops into the twilight.

NEWYORKER: Baptizing the Gun

The younger brother left the yard, passing through a gateway in which a gate was propped open by its own weight where a hinge had given way.

NEWYORKER: The Woman of the House

People living near Portavoe Reservoir outside Donaghadee have claimed that water levels have dropped recently after a sluice gate was left open.

BBC: dead fish