啮咬

shù shí nián lái de fā méi hé lǎo shǔ niè yǎo shǐ zhè xiē bǐ jì běn jī hū cán pò bù kān

数十年来的发霉和老鼠啮咬，使这些笔记本几乎残破不堪。

These notebooks had been through decades of mildew and mice and they 're shredded almost to bits.