Gift economies exist in primitive cultures where scarcity is not a problem.
礼物经济在物质不匮乏的远古时期就已经存在。
This process certainly would be of help to primitive humans, but the problem, of course, is that in the modern world there is very limited advantage of the fight-or-flight response.
这个过程确实对与原始人类有所帮助，但问题是在现代社会中战斗或飞行反应的优势非常的有限。
Trying to solve every problem by fighting or fleeing is the primitive method, still central for the immature child.
用争斗或逃避这一原始做法来解决问题是懵懂孩童的行为。
Present the computer program for finding an analytic solution of well-posed barotropic primitive equations' general initial value problem.
适定的正压原始方程组广义初值问题解析解的计算程序。
The design of a total energy conserving semi-implicit scheme for the multiple-level baroclinic primitive equation has remained an unsolved problem for a long time.
斜压原始方程半隐式全能量守恒格式的构造问题长期没有解决。
However, such a problem is very difficult in general, even for primitive groups and it depends heavily on the understanding of abstract groups and the application of combinatorial tools as well.
然而，即使对于本原群，其次轨道的决定也是一个非常困难的问题，它依赖与人们对抽象群本身结构的了解和一些组合方法的应用。
This simple and primitive use for inheritance is, at times, the perfect solution to your problem.
这种简单而原始的利用继承的方式有时可能是最有效的解决方案。
A family of symmetric primitive matrix with small exponent is characterized, consequently a foundation is laid for the complete characterization of symmetric primitive matrix problem.
讨论了一类小指数对称本原矩阵的刻画问题，为对称本原矩阵的完全刻画奠定基础。
A family of symmetric primitive matrix with small exponent is characterized, consequently a foundation is laid for the complete characterization of symmetric primitive matrix problem.
讨论了一类小指数对称本原矩阵的刻画问题，为对称本原矩阵的完全刻画奠定基础。
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