这座古桥的木桩已经腐朽,若不加固,下一场洪水就可能把它冲垮。Zhè zuò gǔqiáo de mùzhuāng yǐjīng fǔxiǔ, ruò bù jiāgù, xià yì chǎng hóngshuǐ jiù kěnéng bǎ tā chōngkuǎ.The wooden piles of this old bridge have already decayed; if they are not reinforced, the next flood may wash it away.
老房子的木门已经腐朽,轻轻一推就掉了下来。Lǎo fángzi de mùmén yǐjīng fǔxiǔ, qīngqīng yì tuī jiù diào le xiàlai.The wooden door of the old house had rotted; one light push and it fell off.
这种腐朽的思想早就该被淘汰了。Zhè zhǒng fǔxiǔ de sīxiǎng zǎo jiù gāi bèi táotài le.This kind of outdated, decadent thinking should have been discarded long ago.