A common one is the portable office.

普遍的一个用途就是人们可以移动办公。

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A common reason is the portable office.

一个常见的理由是它能提供移动办公。

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But of course, there are also the true mobile, wireless applications, ranging from the portable office to people walking around a store with a PDA doing inventory.

当然，也有移动的无线应用，如，从移动办公到在仓库周围走动的人们用PDA更新库存，等等，都是这方面的应用。

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Phonemakers are gearing up for the holiday season with an array of new products that snap and transmit pictures, add sound clips or double as a portable office.

FORBES: Magazine Article

The company offers its customers an array of portable storage and office products in varying lengths and widths with differentiated features such as patented locking systems, premium doors, electrical wiring and shelving.

FORBES: Portable Storage Leasing Company Has Room To Grow

The company derives the major portion of its revenues from the leasing of portable storage containers, security office units and mobile office units.

FORBES: Portable Storage Leasing Company Has Room To Grow