If your characters' personalities are well defined, it will be easy for you as the writer to portray them realistically and believably in any given situation.

如果你角色的性格被定义得很好，作为作者，你将很容易在任何特定情况下将他们描绘得真实可信。

The rules are to be followed in any given situation.

这些规定任何情况下都要遵守。

There was no clear delineation as to which to use in any given situation.

关于在任意的特定情况下来使用，这里没有清楚的描绘。

Many people find that discontent for a given situation is acceptable.

许多人认为对某个处境不满意是可以接受的。