Osirm
开放式系统互连模式
🗣️ 情景例句
And me?
我呢？
Last month was December,wasn't it ?
上个月是十二月，对不对？
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。