obvious practicality
明显的实用性
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They need to be on-site for the obvious cost and practicality reasons, but also sometimes for security needs (theirs and yours), customer needs, and even location needs.
FORBES: Telecommuting Aside, Connected Businesses Still Need People On-Site
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