Thereafter means after the event or date mentioned. 其后
adverb [时间副词] <正式>其后，此后
The plan will help you lose 3-4 pounds the first week, and 1-2 pounds the weeks thereafter. 该计划将帮助你在第1周减3到4磅，其后每周减1到2磅。
The plan will help you lose 3-4 pounds the first week, and 1-2 pounds the weeks thereafter. 该计划将帮助你在第1周减3到4磅，其后每周减1到2磅。
