Electric guitar strings are thin so they don't hurt your fingers as much as acoustic guitar strings do.
エレキの弦 electric guitar strings
細い thin
から so
アコギ acoustic guitar
より than
指 fingers
痛くならない don't hurt
例文 Electric guitar strings are thinner than acoustic guitar strings so you can play faster with them.
「エレキの弦はアコギの弦より細かいから、より早くプレーすることができます。」
参考になれば幸いです。