人进得去的大壁橱；轻易获得的竞选胜利；没有预定的散客；不必预约的，未经预约而来的；宽敞得可以走进人的；

1. a small room large enough to admit entrance

2. an assured victory (especially in an election)

    Synonym: waltz

3. an operative who initiates his own defection (usually to a hostile country) for political asylum

4. person who walks in without having an appointment

    e.g. the emergency room was overrun with walk-ins