respecting

关于

【例】We are sorry to have your complaint respecting the goods we sent you on the 6th of this month.

接到你方关于本月6日发给你方货物的抱怨，十分遗憾。

respective

各自的，各个的

一般情况下，respective后用复数名词。

【例】The two different types have their respective merits.

两种不同的型式各有优点。

respectively

各自地，分别地

【例】The parties hereto shall respectively execute this Agreement.

缔约各方皆应执行本协议。