choke.boren.(名词)A shotgun bore that narrows toward the muzzle to prevent wide scattering of the shot.绞筒:一种向枪口逐渐变窄以防止射出子弹分散过开的猎枪枪膛A gun with a narrowed bore near the muzzle.绞筒枪:一种有向枪口逐渐变窄的枪膛的枪