这座建筑已经腐朽不堪。

Zhè zuò jiànzhù yǐjīng fǔxiǔ bùkān.

This building is already decayed and dilapidated.

古老的书籍如果不加护理容易腐朽。

Gǔlǎo de shūjí rúguǒ bù jiā hùlǐ róngyì fǔxiǔ.

Ancient books can easily decay without proper care.

腐朽的木桥无法承受重负。

Fǔxiǔ de mùqiáo wúfǎ chéngshòu zhòngfù.

A decayed wooden bridge cannot bear heavy loads.