他们实际可能会花更多来说明其药品，但是，试图“说服”医生做他们想要的是就像赶一群猫。
They indeed may have spent that much detailing their medicines, but, trying to "persuade" a doctor to do what they want is like trying to herd cats.
奶牛的基因组比老鼠和猫的基因组更相似于人类。鼠和猫通常用于新药品的测试。
The cow genome is more similar to humans than to mice and rats. Mice and rats are commonly used to test new medicines.
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