cows读音：[kaʊz]，意思是奶牛。
例句：
1、The cows' rumps were marked with a number.
奶牛的臀部标着一个数字。
2、Suddenly the cow kicked up its hind legs.
奶牛突然尥起了蹶子。
3、He kept a few dairy cows.
他养了几头奶牛。
4、Five cows graze serenely around a massive oak.
五头奶牛在一棵大橡树旁悠闲自在地啃着青草。
5、Before silos were invented, cows gave less milk during winter because they had no green grass to eat.
筒仓发明前，因为没有青草可以吃，奶牛在冬天产奶量减少。
骨头杀手
