:the distance from which something can be easily reached易达到的距离；攻击距离
The snake was within striking distance.蛇处于攻击距离。
They live within striking distance of the city. [=they live close to the city]他们住在城边。
— often used figuratively常用作比喻
They were almost within striking distance of their goal. = Their goal was almost within striking distance. [=they were close to achieving their goal]他们几近实现目标。