第一批完全由环境能量供电的设备很可能是传感器、计算器和时钟。
The first devices to be powered entirely by ambient energy are likely to be sensors, calculators and clocks.
类似的，这个数字时钟也用一张捕蝇纸来收集猎物，然后通过相同类型的微生物燃料电池供电。
Similarly, a digital clock is powered with the same type of microbial fuel cell, collecting its prey with flypaper.
这种简易时钟根据人体工效学设计而成，仅靠一个柠檬供电就可走上整整一周。
Ergonomically styled, the simple clock can run for a whole week powered by a single lemon.
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