例句與造句

1. The creosote is a combination of natural phenols : primarily guaiacol and creosol ( 4-methylguaiacol ), which will typically constitute 50 % of the oil; second in prevalence, cresol and xylenol; the rest being a combination of monophenols and polyphenols.
2. The key difference between the two related enzymes is that tyrosinase can catalyze the hydroxylation of monophenols to diphenols ( monophenolase activity ) as well as the oxidation of the o-diphenol to the o-quinone ( diphenolase activity ) whereas catechol oxidase only possesses diphenolase activity.
3. It's difficult to find monophenols in a sentence. 用monophenols造句挺難的