求翻译：小提琴有琴弦4根。原均为羊肠制的裸弦，约从18世纪起，低音G弦常包以银丝,使其反应灵敏。现代则将G、D、A3根弦用缠金属丝的羊肠弦或钢丝缠弦，晚近也用尼龙弦。E弦改用钢丝弦，使其在高音区的音色更佳是什么意思？

Violin strings 4 root. Original are the nude chord of sheep intestines, about from the 18th century, the bass g chord often package to silver, making it responsive. Modern g, d, A3 is sheep string wrapped around a wire or wire wrapped around the strings, recent also use nylon strings. E string instead of wire strings, making it better in the treble voice