As baseball commissioner, Chandler was instrumental in making Jackie Robinson the first black player in the major leagues.杰基·罗宾逊成为职业棒球联赛中首位黑人选手，作为棒球协会总干事的钱德勒功不可没。...a commissioner to adjudicate on legal rights...裁决合法权益的专...
我们常常举出这样一系列形状不同,然而具有相同光焦度的透镜,作为透镜的配曲调整的例子.One often speaks of this succession of shapes having the same power as exemplifying lens bending.用同样的方法,我们能够求出任意数目的薄透镜的响应.In this same way we could compute the response of any nu...