不是older是order!

不是older是order! old比较级为什么不是older,elder与older有区别吗? trial order是指? old的比较级是older还是elder order 英语翻译Purchase Order是采购订单的意思 purchase order 是In good Order还是in a good order啊 the Order of Phoenix 是凤凰社,order 怎么翻译啊 in order some tips are certainly in order一些小费是必须的in order. 是old brother,older brother还是elder brother? She is two years older than me中older形容词作定语,修饰的是前面的中心词two yea payment order 是何意思呢?帐面?