並前往https://lingualeo.com/en/jungle/%E5%BE%AE%E7%A9%8D%E5%88%86_calculus__%E8%87%AA%E7%84%B6%E5%B0%8D%E6%95%B8%E5%87%BD%E6%95%B8_the_natural_logarithmic_function-1275438