Another, of course, is that new versions are patentable.

另一个原因当然是新药物可以获得专利。

Ideally, America's Congress would set out exactly what parts of the human genome should be patentable.

理想的做法是美国国会应该确切地规定人类基因组的哪些基因可以申请专利。

Unlike drugs, vitamins, minerals and microbes are not patentable.

与药物不同，维生素、矿物质和微生物不可申请专利。

That's one reason researchers continue to look for better versions of the drug. Another, of course, is that new versions are patentable.

这是研究人员继续寻找更好的药物的一个原因，另一个原因当然是新药物可以获得专利。