这两个词意思完全不同,我先分别解释一下,你可以根据语境选择: ## duty(名词) 1. **责任、义务** - It's my duty to protect my family.(保护家人是我的责任。) 2. **职责、任务** - He is on duty tonight.(他今晚值班。) 3. **关税、税** - You have to pay customs d