aliphatic amino acid

例句：

1. 1. The oil is aliphatic in nature.
   这种油是脂肪性质的。
2. 2.Aliphatic compounds are often found inplants.
   脂肪化合物通常存在于植物中。
3. 3. Thealiphatic chain of themolecule is important for its properties.
   分子中的脂肪链对其性质至关重要。