I really can't afford any more interruptions right now.
四级词汇讲解:
afford本义为“给予;买得起”，引申开来可以表示“承受”，如本句中的cannot afford就相当于“不能承受”。
英语四级考点归纳：
afford的用法十分灵活。如:
※ I can't afford to play game with you, sorry.抱歉，我跟你玩不起。
※ Plenty of kids in this village can't afford to go to school(=can't afford education).这个村子里的很多小孩都上不起学。
※ I'm too busy to afford an hour for lunch.我太忙了，抽不出一个小时吃午饭。
From:https://www.zgghmh.com/CET-4/20003660.asp