They take aim, too, at protein domains that are basically identical in all major strains of the virus, so that the drug will be useful against the broadest possible range of viral variants.

• 他们也喜欢瞄准一些在主要的病毒株中构造相近的蛋白质区间，这样一来，研发出来的药物就可以成为广效的抗病毒药物。