Bulk buyers generally pay lower unit prices to reflect suppliers' economies of scale.

大宗购买者通常能获得较低的单价，反映了供货商可以通过规模经济降低成本。

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An inflatable PFD has less bulk and interference than a foam unit, but is ready to provide flotation during an unexpected entry into the water.

可膨胀的PFD有较少的体积和没有了干扰泡沫单位，但在想不到的进入水后实时提供漂浮。

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"Shipping unit" means any physical unit of cargo not shipped in a package, including machinery, vehicles and boats, except goods shipped in bulk.

是指未以包件运输的任何一个具体单位的货物，包括机械、车辆及船只，但散装货物除外。

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Spitzer's case is focusing on a few arcane areas of accounting--including an allegedly bogus deal by AIG with General Re, a unit of Berkshire Hathaway, to bulk up AIG's balance sheet.

FORBES: The Battle of the Titans over AIG

Alternatively, if your space and budget permit, you could investigate buying in bulk from vendors in order to lower your per unit cost.

FORBES: Step 4 For A Successful Startup: Maximize Operational Efficiencies