a roughly cut piece大块;厚块
a chunk of cheese/meat一大块奶酪/肉
pineapple/tuna chunks菠萝/金枪鱼块
informal a part of something, especially a large part一部分;(尤指)大部分,一大块
a chunk of text一大段文字
a substantial chunk of our profits我们利润的很大一部分
Three hours is quite a chunk out of my working day.3个小时占了我一个工作日中相当长的一段时间。