last one到底表示上一个还是最后一个?例如：the last day是上一天呢还是最后那天的意思?

last one 是有歧义的词组,因此正确意思要看上下文,例：A:The apples are all gone.What happened?B:Oh,I took the last one （我吃了最后一个.）The last bus was so full it didn't stop.I'll have to wait for the...