radioisotopes cow

• (放射性同位素)母牛

radioisotopes cow的用法和样例：

例句

1. Give the cow a dose when she falls off her food.
   这头母牛食欲不振时就给它一服药吃。
2. A cow will yield several gallons of milk each day.
   一头母牛每天产几加仑的牛奶。