Many people like keeping searchable records on a computer - e-receipts come in handy during tax season.

很多人喜欢在电脑上保存一份可查询的记录，这样一来电子收据在交税的时候迟早能用上。

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The Wi-Fi will come in handy for things like checking e-mail and browsing the Web when you're near a hotspot or perhaps within range of your own wireless network at home.

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The system can keep track of both friendly forces and the enemy, and allows troops to communicate by e-mail -- a feature that could come in handy if units have radio failures or move out of transmission range.

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