Complex sentence: She has been a member of the original X-Men teams, the X-Treme X-Men, Excalibur, the Exiles, and a cross-dimensional X-Men team similar to the Exiles known as the X-Treme X-Men.
Split into simpler sentences: She has been a member of the original X-Men teams, the X-Treme X-Men, a member of the Excalibur and the Exiles. She is currently a member of a cross-dimensional X-Men team similar to the Exiles which also known as the X-Treme X-Men.