a) EUV jet observed with the 171 Å filter of SDO/AIA on 17 September 2010. The solid line indicates the slit position along which the jet was ejected. b) Temporal evolution of the 171 Å image in the slice along the jet. c) Some linear fitted lines overlaid on the time-slice 171 Å image. As time passes, different components or kernels of the jet were launched from the jet base with increasing speed, reaching 200 km s^-1.