diunsaturated

例句：

1. 1. The oil was found to be diunsaturated.
   该油被发现是双饱和的。
2. 2. The molecule is diunsaturated, which means it has two double bonds.
   这个分子是双饱和的，这意味着它有两个双键。
3. 3. The diunsaturated compound is a rare and valuable substance.
   这种双饱和化合物是一种罕见的宝贵物质。