bulk/bʌlk; bʌlk/n 1 the bulk (of sth) the main or largest part of something(某物的)主要部分[大部分]: The bulk of the work has already been done. 主要工作已经完成了。2 [U] the size of something or someone, especially a large size 体积;〔某人的〕块头: His bulk made it difficult for him to move quickly enough. 他这大块头太大,很难走得快。3 in bulk in large quantities 大批地﹐大量地: It's cheaper to buy things in bulk . 大批购买价格便宜些。