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.
Use the lab and prepare some plant food for young tomatoes.
用实验室为西红柿幼苗准备一些养分。
My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.