When someone is tied up, they are busy or prevented from doing something, such as speaking to someon

中文解释

把（某人）缠住，使（某人）无法脱身 I\'m afraid we can\'t meet till Wednesday - I\'m tied up on Monday and Tuesday. 恐怕我们要到周三才能碰头——我周一和周二都脱不开身。