其它特征包括被动或主动装置以增加燃料温度或降低燃料容器内的压力，以提高蒸发速度。
Other features included are passive or active arrangements to increase the temperature of the fuel or reduce pressure in fuel container to enhance rate of vaporization.
58岁的纳奥米·姆里乌基弯腰主动地给大家讲这种装置能使柴火用量减少一半。
Naomi Muriuki, 58, took the initiative to tell everyone that this device could reduce the amount of firewood used in half.
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