Buying in bulk is more economical than shopping for small quantities.
大批采购比少量购买更经济实惠。
《柯林斯英汉双解大词典》
2
This suggests that the bulk of these sovereign-debt holdings are buried in small, not very savvy German Banks.
这表明，这些主权债务的大部分份额为德国那些小却不是很精明的银行所持有。
3
For costs like electricity and insurance, it can pay to pool your buying power with others and negotiate bulk discounts, especially if you run a small business.