This allows you to effectively back and forward trace on every event that was in flight at a given time period. If you can't quite wrap your head around that, here's the command.

这样允许您有效地来回跟踪在给定的时间段内发生的每个事件。

youdao

This query starts at a context element and follows all trace relationships in the forward direction to discover all elements in higher levels of abstraction.

这个查询是从一个上下文元素开始的，并遵照向前方向的即时跟踪关系从而发现更高抽象层的同一水平的元素。

youdao

We cannot trace having received your instructions. Please forward relative copies with reference to this letter.

我们查不到收到你们付款指示的记录。请将此信的相关影印件寄给我们。

youdao

Chalara dieback of ash, caused by the fungus chalara fraxinea, was identified at the new Welsh sites during a "trace forward" inspection of young trees sourced from known infected nurseries.

BBC: Ash dieback: First three Wales cases of 2013 in woods

Police are also looking to trace the person who came forward to help the family.

BBC: Edinburgh, Fife & East Scotland

Dozens of bodies remained unclaimed despite appeals for relatives to come forward, and the creation of a special task force to trace them.

BBC: Dutch raise summer heatwave toll