used to convey that the second event mentioned happens immediately after the first一…就…
sooner rather than later
before much time has gone by越早越好
no sooner than
As soon as一…就…
sooner or later
At some time; eventually迟早；有朝一日
柯林斯高阶英汉双解学习词典释义
ADV-GRADED
很快;马上;不久
If something is going to happen soon, it will happen after a short time. If something happened soon after a particular time or event, it happened a short time after it.