escape 和 flee 两者均有“逃”的意思，不过它们表达的侧重点不太一样。

1. escape 表示“逃脱”，主要指从被监禁或类似没有自由的状态中逃脱。如：

Two prisoners escaped last night.

The fish escaped from the net.

注：有时 escape 会用于引申义。如：

He escaped punishment.

She escaped being caught.

The fact escaped my notice.

2. flee 表示“逃走”，着重逃的动作，强调逃走时的急促或仓促。如：

The burglars were frightened and fled.

The enemy soldiers were fleeing in all directions.

注：表示“逃跑”时，escape 是不及物动词，而 flee 则可用作及物或不及物动词。如：

He fled (from) the burning house.