in bulk
bulk作名词的意思是“大规模;大量”
It was a document of surprising bulk.
这是一份篇幅惊人的文件。
in bulk
in large amounts
大量，批量
The office buys paper in bulk to keep down costs.
办公室批量买进纸张以减少成本。
They like to buy goods in bulk.
他们喜欢大量购买商品。
sale by bulk 批发
