Dunbar says his number of 150 "refers to those people with whom you have a personalized relationship, one that is reciprocal and based around general obligations of trust and reciprocity."

Dunbar说他定出的这150人“指的是那些和你直接建立关系的人，彼此信任，互惠互助。

youdao

It is the aim of science to establish general rules which determine the reciprocal connection of objects and events in time and space.

科学目的是确立的一般规则，确定相互连接的物体和事件时间和空间。

youdao

In this paper, according to the risk neutral pricing theory, the reciprocal stochastic differential equations and the general pricing formulas of the four types of cross-cur.

本文受此启发，运用风险中性定价原理，利用偏微分方程的方法，求出了四类汇率联动期权的定价公式，为实践者提供了理论上的参考价值。

youdao

In order to maintain the general level of reciprocal and mutually advantageous concessions with respect to agricultural trade with Israel, on July 27, 2004, the United States entered into an agreement with Israel concerning certain aspects of trade in agricultural products during the period January 1, 2004, through December 31, 2008 (the "2004 Agreement").

WHITEHOUSE: The White House

Pursuant to section 4(b) of the USIFTA Act, I have determined that it is necessary, in order to maintain the general level of reciprocal and mutually advantageous concessions with respect to Israel provided for by the USIFTA, to provide duty-free access into the United States through the close of December 31, 2013, for specified quantities of certain agricultural products of Israel.

WHITEHOUSE: The White House

In Proclamation 7826 of October 4, 2004, consistent with the 2004 Agreement, the President determined, pursuant to section 4(b) of the USIFTA Act, that it was necessary in order to maintain the general level of reciprocal and mutually advantageous concessions with respect to Israel provided for by the USIFTA, to provide duty-free access into the United States through December 31, 2008, for specified quantities of certain agricultural products of Israel.

WHITEHOUSE: The White House