翻番: to double, to increase by a certain number of times...
测量: survey, to measure, to gauge, to determine...
追: to chase, to pursue, to look into, to investigate, to reminisce, to recall, to court (one's beloved), to binge-watch (a TV drama), retroactively, posthumously...
背: carry on one's back, to be burdened, to carry on the back or shoulder, learn by heart, the back of the body...
讨论: to discuss, to talk over...
