hop step and jump 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]