octane enhancer

例句：

1. 1. The fuel blend contains a special additive to enhance its octane rating.
   该燃料混合物含有一种特殊添加剂，以提升其辛烷值。
2. 2.Engineers use this additive to improve the performance of gasoline engines.
   工程师使用这种添加剂来提高汽油发动机的性能。
3. 3.The manufacturer claims that their product can significantly increase the octane level of gasoline.
   制造商声称他们的产品可以显著提高汽油的辛烷值。