舒舒服服地坐在一把椅子里，闭上双眼，想象你走进了一个房间，除了白色的粉墙外没有任何装饰，只有一张桌子和两把隔桌对置的折椅。
Have a seat in your favorite chair and close your eyes. Now imagine walking into a bare room, with plain white walls with a small table and two folding chairs facing across from each other.
确保用户隔一段时间就回到网站的一个策略就是不断地向他们提供新信息。
One strategy to ensure that users return to the site at periodic intervals is to offer them fresh information from time to time.
哨兵隔一定的时间从一个地方巡视到另一地方。
The guard traveled from one place to another at regular intervals.
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