hairsbreadth

The car missed the cyclist by a hairsbreadth.

用法提示：“a hairsbreadth”作名词，表示极短的距离，强调险些发生。

The arrow missed the target by a hairsbreadth.

用法提示：“a hairsbreadth”在此句中作名词，指非常小的距离，说明几乎命中。

The dog squeezed through the narrow gap, which was only a hairsbreadth wider than its body.

用法提示：“a hairsbreadth”作名词，用来形容极其微小的宽度差异。