三级跳

Hop \Hop\, n.
1. A leap on one leg, as of a boy; a leap, as of a toad; a
jump; a spring.

2. A dance; esp., an informal dance of ball. [Colloq.]

{Hop, skip and jump}, {Hop, step and a jump} or {Hop, step
and jump},

1. a game or athletic sport in which the participants cover
as much ground as possible by a hop, stride, and jump in
succession.

2. a short distance. --Addison.
[1913 Webster +PJC]

hop skip and a jump \hop", skip", and a jump"\, hop skip and
jump \hop", skip", and jump"\n.
a short distance; as, it's just a hop, skip and a jump away.
[Colloq.]

Syn: stone's throw.
[PJC]