A numerical ordering of the ends has been used throughout for convenience. 为了方便，全部应用诸端点的数值次序。
A box of twenty sets of sequencing fun puzzle cards stimulate kids to learn the ordering of life cycles and events. 一套二十副的次序卡不单令小朋友学习生命过程及事序，更可从重新排序的过程中领会到因果关系及逻辑性。
