Density and Crowding 

of the great myriad of problems with man and the world face today, there are three significant trends which stand above all others in importance. 

myriad 无数的  

at the outset 一开始

whilst 同时

the diffusion of responsibilities 职责分散

avert 避免

be reluctant to 不情愿做某事

density : the number of individuals per unit area or unit space

crowding: the product of density, communication, contact and activity.  It implies a pressure,a force and a psychological reaction.

FEELINGS: upset; stressed; uncomfortable