nonessential

adj.

非本质的；

n.

不重要的人；

1. Reducing or eliminating nonessential travel was the most frequently reported method of cutting business travel expenses.
   减少或者取消非必需的商务旅行，是削减商旅开支最常用的方法。
2. This "could be due to nonessential, potentially harmful trace elements contained in zinc supplements, such as cadmium, a known carcinogen,"the researchers said.
   研究人员说，这可能归因于存在于锌补充剂中的非必需的潜在有害微量元素，例如致癌物质镉。

Nonessential sites improve phosphorylation switch.
Rapid tRNA Decay Can Result from Lack of Nonessential Modifications
Genetically essential and nonessential alpha-tubulin genes specify functionally interchangeable proteins.
Stat5a and Stat5b proteins have essential and nonessential, or redundant, roles in cytokine responses
Stat5a and Stat5b proteins have essential and nonessential, or redundant, roles in cytokine responses.
Essential Genes Are More Evolutionarily Conserved Than Are Nonessential Genes in Bacteria
Mapping of Herpes Simplex Virus-1 Neurovirulence to γ34.5, a Gene Nonessential for Growth in Culture
Construction and in vitro properties of SIVmac mutants with deletions in "nonessential"genes.
Identification of Nonessential Regions of the nsp2 Replicase Protein of Porcine Reproductive and Respiratory Syndrome Virus Strain V...
Transgenic plant virus resistance mediated by untranslatable sense RNAs: expression, regulation, and fate of nonessential RNAs.