他会看到我不是那么容易被替代的。He would see I was not so easily replaceable.实践经验是无法替代的。There is no substitute for practical experience.它们是独一无二、不可替代的无价之宝。They are priceless, unique and irreplaceable....

“替代的”的英语可以翻译为：[医] succedaneous，succenturiate ...