WITHIN a week of each other,both the European Commission and the White House have set .WITHIN a week of each other,both the European Commission and the White House have set out a series of new rules designed to stem the rising tide of cyber-attacks a

WITHIN a week of each other,both the European Commission and the White House have set .WITHIN a week of each other,both the European Commission and the White House have set out a series of new rules designed to stem the rising tide of cyber-attacks a
WITHIN a week of each other,both the European Commission and the White House have set .
WITHIN a week of each other,both the European Commission and the White House have set out a series of new rules designed to stem the rising tide of cyber-attacks against public and private victims.请问WITHIN a week of each other中的each other放在这是什么用法?又该怎么翻译?

WITHIN a week of each other,both the European Commission and the White House have set .WITHIN a week of each other,both the European Commission and the White House have set out a series of new rules designed to stem the rising tide of cyber-attacks a
双方各自的意思,就是不是双发共同的.强调各自的独立性.
一周内,欧洲委员会和白宫双方各自设计出台了新准则/规定（法规）用以阻止针对公共和个人受害者的网络攻击的上升态势.