For example, mobility in physical robots implies some sort of locomotion, but mobile soft robots (or agents) can have mobility — here, the ability to migrate between hosts in a network.

例如，物理机器人的机动性意味着某种形式的移动，但是移动软件机器人(或代理)也可以有机动性——此处是指在网络上不同主机之间迁移的能力。

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This includes the elderly, those who are housebound or who have limited mobility and do not have a social support network in place to assist with tasks such as food shopping and cooking.

BBC: Millions of malnourished 'go unnoticed'

"Our goal is to develop robots with legs that have the mobility and agility of animals, " says Raibert.

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For example, transit is a crucial concern for many seniors -- especially those on a limited income, or who have visual or mobility impairments.

CNN: Report: More than half of seniors now use the Web