horse·back /ˈhɔrsˌbæk/
 馬背(ad.)在馬背上,騎在馬上


 Horse·back n.
 1. The back of a horse.
 2. An extended ridge of sand, gravel, and boulders, in a half-stratified condition.
 On horseback, on the back of a horse; mounted or riding on a horse or horses; in the saddle.
    The long journey was to be performed on horseback.   --Prescott.

 ◄ ►


 horseback
      n 1: the back of a horse
      2: a narrow ridge of hills [syn: hogback]
      adv : on the back of a horse; "he rode horseback to town";
            "managed to escape ahorse"; "policeman patrolled the
            streets ahorseback" [syn: ahorse, ahorseback]