1.
nonessential region
非必需区[可指载体上不影响复制的基因区段]
2.
Different Nonessential Regions for Insertion of Foreign Gene Influence the Ability of Recombinant Fowlpox Viruses to Resist the Interference of Maternal Antibodies;
外源基因插入不同复制非必需区影响重组鸡痘病毒抵抗母源抗体干扰的能力
3.
Identification of non-essential gp024 gene in Goatpox virus
山羊痘病毒非必需基因区gp024基因的鉴定
4.
Luxuries are - ties.
奢侈品是非必需品。
5.
Limit the production of goods that can be done without
限制非必需品的生产
6.
Luxuries are superfluity.
奢侈品都是非必需品。
7.
It seems neither necessary nor credible.
这看来既非必需，也不可信。
8.
In the United States the automobile is a necessity and not a luxury.
在美国，汽车为必需品而非奢侈品。
9.
Something inessential but conducive to pleasure and comfort.
奢侈品使人愉快、舒服但非必需的东西
10.
She wastes much of her money on non-essentials.
她把许多钱浪费在非必需品上。
11.
Make list of key needs that must be met by new office space
列出必须满足的新办公区关键需求
12.
Living in bush areas, stamina and courage are required.
住在丛林地区，精力和勇气是必需的。
13.
Water is of vital necessity in the desert.
在沙漠地区水是维持生命的必需品。
14.
The burning of incense， while not necessary， helps condition your body to relax.
也可以燃香，但并非必需，这有助于你放松身体。
15.
Copyright is an option, not a requirement, for the creator.
著作权对于作者来说只是一个选择权，而非必需。
16.
Analysis of the Prices of the Necessities to Defend and Treat SARS and Its Countermeasures;
预防及治疗“非典”必需品的价格分析及政策建议
17.
Apparently, the government's current reform of the teaching of Chinese is very essential, most timely and definitely in keeping with the new age.
现在政府改革华文教学，可说是十分必要，非常及时，也是时代的必需。
18.
A Study of the Necessity of Cultivating Talents Demanded for Service Trade Development in Inner Mongolia;
培养我区服务业发展所需人才的必要性研究