Open a gate.

打开大门。

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

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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