My Economical Man 我的经济适用男
an economical man 一个节省的人
law economical man 法律经济人
rational economical man 理性经济人
Under the background, we focus on the deduction of the concept "utility" in economics and analyze the rationality and limitation of "economical man" and the research object and direction of economics.
在此背景下，本文以经济学效用概念的演化为主线展开研究，深入探讨经济人假设的合理性、局限性以及经济学的研究对象和研究方向。
The most economical finish is concrete pavers: They're less expensive, and, because the man-made shapes are uniform, easier to install.
最为经济的方法就是混凝土铺路石：它们相对会不那么贵，而且因为人工形状都是一致的，所以也比较容易安装。
The man is economical of his time.
这人很节约时间。
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