例句與造句

1. ""'Streptomyces prasinus " "'is a bacterium species from the genus of " Streptomyces " which has been isoalted from soil on Mallorca in Spain . " Streptomyces prasinus " produces prasinomycin, validamycin, prasinon A and prasinon B.
2. It's difficult to find validamycin in a sentence. 用validamycin造句挺難的