English (Source)
Towers gain experience <Highlight>{{TOWER_EXP_GAIN_CHANGE_PERCENT:percent}}%</> faster but upgrading them with gold costs <N_Highlight>{{LEVEL_UP_COST_CHANGE_PERCENT:percent}}%</> more.
French Translation
Les tours gagnent de l’expérience <Highlight>{{TOWER_EXP_GAIN_CHANGE_PERCENT:percent}}%</> plus rapidement, mais leur amélioration avec de l’or coûte <N_Highlight>{{LEVEL_UP_COST_CHANGE_PERCENT:percent}}%</> de plus.