xián lùn / shì tú / jiě shì / yǔ zhòu / zhōng / zuì / jī běn / de / lì zǐ / shì / rú hé / zǔ chéng / de弦论试图解释宇宙中最基本的粒子是如何组成的。String theory attempts to explain how the most fundamental particles in the universe are composed.