MEI Shi - long , 1991 . Middle and Late Cambrian conodont and trilobite biostratigraphy in Wanxian, Hebei . Unpublished Ph. D thesis of Peking University.武桂春, 2003. 鲁西地区晚寒武世牙形石. 北京大学博士研究生学位论文....an unpublished PhD thesis...
Pace off four metres, and then stop.用步子量出4米, 然后停下来.Has phenomenal pace off the ball.无论带球与否他都有超乎寻常的速度.I pace off the wooden bridge and found it was about 100 feet long.我步测出那座木桥长约100英尺....