Arabic number

例句：

1. 1. The Arabic numbers are usedin many parts of the world.
   阿拉伯数字在世界许多地方使用。
2. 2. The Arabic numberswere introduced to the West during the IslamicGolden Age.
   阿拉伯数字在伊斯兰黄金时代被引入西方。
3. 3. The Arabic numbers areeasy to learn and use.
   阿拉伯数字易于学习和使用。