尽管如此，研究人员发现很难准确解释为什么能量限制能产生如此良好效果。
Despite this, researchers in the field have found it difficult to explain exactly how caloric restriction produces these favourable effects.
对小鼠进行了短时间（10个月）的能量限制，考察了能量限制对安妥明所致小鼠肝脏氧化损伤的影响。
The effect of a shorter period(10 months)of caloric restiction on oxidative damage induced by clofibrate in mouse liver is studied.
WANET网络具有严重的资源限制特点：如带宽限制、能量限制等，同时这些资源提供的浮动性很大，这就给WANET网络的路由策略提出了严峻的挑战。
Resource in WANET is seriously limited, such as bandwidth constraints and energy constraints etc. This presents a serious challenge to design routing strategies for WANET.
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