chunk
n
1 thick solid piece cut or broken off sth (从某物上切下或折下的)大块
a chunk of bread, meat, ice, wood, etc 一大块面包、 肉、 冰、 木头等.
2 (infml 口) fairly large amount (of sth) (某物)相当大的部分
I've completed a fair chunk of my article. 我已经把文章的一大部分写完了.
Do you remember one afternoon ten years ago when I came to your house and borrowed a necklace of yours? Pierre, my husband, was working in a government office. We'd been invited to a ball at the palace so I needed to borrow some jewellery.