methylmethyiene

例句：

1. 1. The newcar smells like methylmethyiene.
   新车闻起来像甲基乙烯。
2. 2. Thechemical was made from methylmethyiene.
   这种化学物质是由甲基乙烯制成的。
3. 3. Themolecule is composed of methylmethyiene and hydrogen.
   这个分子由甲基乙烯和氢组成。