If these fears are justified, then perhaps we should all be worried about the amount of time we spend talking on our phones or plugging into wi-fi hotpots.
如果这些担忧并非无稽之谈，那么我们可能都要为自己花在电话和wi - fi无线网络上的时间而担忧了。
Thinking back to basic shell scripting logic, an if statement consists of if, then, and fi.
回忆一下基本的脚本编程逻辑：if语句由if、then和fi组成。
When using them, stick to the format above; that is, keep the "if" and the "then" on separate lines, and keep the "else" and the terminating and required "fi" in horizontal alignment with them.
在使用时，要遵循以上格式；即，将 "if"和 "then"放在不同行，并使 "else" 和结束处必需的 "fi"与它们水平对齐。
When using them, stick to the format above; that is, keep the "if" and the "then" on separate lines, and keep the "else" and the terminating and required "fi" in horizontal alignment with them.
在使用时，要遵循以上格式；即，将 "if"和 "then"放在不同行，并使 "else" 和结束处必需的 "fi"与它们水平对齐。
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