put the grain sack on a horse back

• 用马驮粮袋

put the grain sack on a horse back的用法和样例：

例句

1. While the count picked up the paper he put spurs to his horse, which leaped in astonishment at such an unusual stimulus, and shot away with the rapidity of an arrow.
   当伯爵拾起那张报纸的时候，阿尔贝用马刺踢了他的马肚子一下，马象一支箭似地疾驰而去。
2. Spurs are sharp metal devices attached to a cowboy's boots.By jabbing a horse's flanks with the spurs, the cowboy can encourage his mount to run faster.
   马刺是附在牛仔靴子上的尖尖的金属物，牛仔用马刺戳马的胁部，就可以让马跑得更快。