- herd
 - [hə:d]
 - n. 兽群,畜群;放牧人
vi. 成群,聚在一起
vt. 放牧;使成群 
参考例子
           - 1.Wild geese herd to the south in autumn every year.
 - 每年秋天大雁都成群结队地飞往南方。
 
- 2.You are slower than a herd of turtles stampeding through peanut butter.
 - 你的速度比一群在花生酱上乱窜的乌龟还慢。
 
- 3.The dogs were used to help herd llamas - rather like an early version of the sheepdog.
 - 狗被用来协助科里巴亚人放牧骆驼,这很像是早期版本的牧羊犬。
 
英文解释
           - n.
 - 1.a group of cattle or sheep or other domestic mammals all of the same kind that are herded by humans
 - 2.a group of wild mammals of one species that remain together: antelope or elephants or seals or whale
 - 3.a crowd especially of ordinary or undistinguished persons or things
 
- v.
 - 1.cause to herd, drive, or crowd together
 - 2.move together, like a herd
 - 3.keep, move, or drive animals
 
网络释义
               - herd
 - 牛的统称; 猪的统称; 兽群; 畜群;
 
- herd susceptibility
 - 人群易感性;
 
- candidate herd
 - 后备种畜群; 候选种畜群;
 
- elite herd
 - 优秀种畜群; 核心种畜群;
 
- dry herd
 - 无仔牛群;