在一个流程使用资源并执行任务时，便会产生相应的资源成本，例如员工工资和材料成本。
As a process USES resources and performs tasks, there are associated costs for the resources such as their salaries and material costs.
一种就是使用轻型材料，例如铝和镁。
One is to use light-weight materials, such as aluminum and magnesium.
芯片也可以使用温差热电材料- - -这种材料因环境中两种不同温度而产生电流- - -例如身体温度和(通常是)我们周围的更凉的空气。
The chip could also use thermoelectric materials, which produce an electric current when exposed to two different temperatures-such as body heat and the (usually) cooler air around us.
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