English Dictionary

platform screen door

noun

One of a series of doors at a train or subway station, at the edge of a platform, that prevent access beyond the platform when there is no train to be boarded

The platform screen door automatically opens and closes to ensure passenger safety.

意味（1）

One of a series of doors at a train or subway station, at the edge of a platform, that prevent access beyond the platform when there is no train to be boarded