pac·ing /ˈpesɪŋ/ 名詞
Pace v. i. [imp. & p. p. Paced p. pr. & vb. n. Pacing ]
1. To go; to walk; specifically, to move with regular or measured steps. “I paced on slowly.” --Pope. “With speed so pace.” --Shak.
2. To proceed; to pass on. [Obs.]
Or [ere] that I further in this tale pace. --Chaucer.
3. To move quickly by lifting the legs on the same side together, as a horse; to amble with rapidity; to rack.
4. To pass away; to die. [Obs.]
n 1: (music) the speed at which a composition is to be played
2: walking with slow regular strides