exogenous hormone的用法和樣例：
例句
- Effects of Exogenous Growth Regulators on the Living Rate of Top Grafting and Branch Growth of Ginkgo biloba L.
外源激素對銀杏高位嫁接及其枝梢生長(cháng)的影響。 - The endogenous hormone changes of cutting woods trees and those of softwood cuttings were contrarieties.
采穗母樹(shù)的內源激素變化與插條的內源激素變化相反。
