milk vt.挤（奶）The milkmaid milks the cows twice a day.挤奶女工一天两次为奶牛挤奶。
stable n.马厩
hack it 能够经营好
【拓展词汇】stall（仅能容一只动物的）小隔栏，隔栅，厩
pig sty n.猪圈
pen n. （家畜的）栏，圈，棚
chicken coop 鸡笼
herd n.牧群
