role:角色或用户组的意思,用来区分权限.pay n. (1) 工资;薪金;津贴 in the pay of (1) 被收买的;被豢养的;当狗腿子的 This man is in the pay of the enemy. 此人是被敌人收买的。 pay back (1) 报复 (= pay off, pay out, serve out) I'll certainly pay you back for what you did to me! "你那样对待我,我一定要回敬你的!" (2) 偿还;偿付 How can I pay you back for all your kindness? 你的这番好意我该怎么报答呢? pay off (1) 还清;偿清 (2) 报复;偿还 (3) 结清工资解雇(某人) (4) 成功 Did your plan pay off? 你的计划成功了吗? Our plan certainly paid off; it was a great idea. "我们的计划当然成功了,那是个很好的主意。" pay out (1) 花费;支出 I paid out a lot of money for that car. 为了那辆汽车我花了不少钱。 (2) 放松(绳子);放出 pay up (1) (不情愿地)付清;还清(债务)