1. My last boyfriend sal junior, is a scum bag.
    我上一个男朋友小萨尔也是个混蛋。

2. In the process of alumina manufacture, after many years practice, Shanxi Aluminium Plant have first exploited the flow technology of bag filter to reclaim filtrate scum of vertical-pan filter successfully.
    在氧化铝生产过程中，山西铝厂经过多年的实践，首次成功地开发出袋滤机回收立盘母液浮游物的生产工艺。