• 后门

Backiel巴茨凯尔backn.后面；背脊；靠背；后背；后卫vt.支持；后退adv.向后地adj.向后的；后面的；偏远的；过时的；积欠的back-track database-creating回溯建库Backed Oxtail Rice Italian Sauce意大利焗牛脷饭Back-up Computer Control System备用电脑控制系统back-reflection Laue photograph背射劳厄相片Backing Up and Restoring Packages备份和还原包backed the argument with facts.用事实证明论点Back-dimensional reconstruction后处理重建技术back to medical professional life回归医学生活back-geared upright crill press背齿轮立式钻床Backfilling method after stopeing嗣后充填

1. I can open the back gate at midnight.
   午夜的时候我可以打开后门。