Complex sentence: Resistor R_C recharges the capacitor C_T or the transmission line\\ scriptstyle TL--(i.e. the energy storage components) after commutation: it has usually a high resistance in order to limit the static collector current, so the recharging process is slow.
Split into simpler sentences: Resistor R_C recharges the capacitor C_T or the transmission line\\ scriptstyle TL--(i.e. the energy storage components) after commutation. It has usually a high resistance in order to limit the static collector current, so the recharging process is slow.