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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Reports state that the gate to the entrance fell down as a result of pressure from the crowd.

BBC: SPORT | Football | African | 'Deaths' reported at Guinea tie

Boarding passes for the flight did not state a departure gate number however, leading to irritation among some passengers lining up at BA's customer service desk to inquire about the status of the flight.

CNN: Software glitch delays London flights

When Jim Tressel was outed and ousted in the Ohio State tattoo-gate, it was not the tattoo exchange for player memorabilia, but the coach cover up that was the primary basis for the NCAA punishment of him and the university.

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