英语释义
1. not essential
2. being a substance synthesized by the body in sufficient quantity to satisfy dietary needs
nonessential fatty acids — see also nonessential amino acid — compare essential sense 2b
3. not completely necessary not essential
4. not necessary
We cut back on nonessential purchases.
5. something that is not necessary There is no room for nonessentials.
6. being a substance synthesized by the body in sufficient quantity for normal health and growth
a nonessential fatty acid — compare essential