usher [ˈʌʃə(r)]

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n.带位员，招待员；vt.引导，护送；vi.做招待，担任引座员

to show someone where they should go, or to make someone go where you want them to go

The usher seated us in the front row. 引座员让我们在前排就座。
They were quickly ushered away. 他们被迅速领开。