It introduced Hindu-Arabic numerals to the West, which eventually replaced the unwieldy Roman ones.

它将印度-阿拉伯数字系统引入西方，最终取代了笨重的罗马数字。

We didn't need more Arabic numerals!

我们不需要更多的阿拉伯数字！

Arabic numerals are already being used to denote how many atoms of an element there are in a molecule, the molecule's charge, its oxidation state, the number of molecules reacting in an equation.

阿拉伯数字已经被用来表示分子中元素的原子数量，分子的电荷， 氧化态，方程中反应的分子数量。