Straining, the horse moved slowly forward, its tail hanging listlessly down, its shoes worn off, body frothing in sweat, and its saliva occasionally dripping.

• 它吃力地慢慢地行走着，尾巴无力地往下垂，蹄子上的铁马掌也磨掉了，浑身冒着汗，口水不时从嘴里流出来。