To analyze economics, a hidden precondition needs to be satisfied: ethics is an exiguous resources, it must be optimized and assigned reasonably to maximize its avail.
对道德进行经济学分析，实际上隐含着如下前提：道德是一种稀缺资源，为了实现其效用最大化，必须进行选择优化和合理配置。
The nonlinear dynamic stability of transmission tower is a hot topic in theoretic research, but it is exiguous in China.
输电铁塔结构的非线性动力稳定问题，是理论研究领域内一个前沿课题，目前在国内少有研究。
The nonlinear dynamic stability of transmission tower is a hot topic in theoretic research, but it is exiguous in China.
输电铁塔结构的非线性动力稳定问题，是理论研究领域内一个前沿课题，目前在国内少有研究。
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