一项调查显示，55%的澳大利亚人在家中拥有座机，仅有29%的人把智能手机作为他们唯一的通讯手段。
55 percent of Australians have a landline phone at home and only just over a quarter (29%) rely only on their smartphones according to a survey.
在极其恶劣的矿井环境中，可靠的通讯手段显得尤为重要。
In the harsh environment and changing topology of a mine, reliable communication is a high-stakes issue.
尽管有了现代的通讯手段，信号旗系统仍是主要的通讯手段。
In spite of modern means of communication, the system of signaling flags remains the leading means of communication.
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