viability
n. 生存能力，发育能力；可行性
参考例子
1.The stored materials are tested viability every five years.
这种贮藏材料每五年检查一次生活力。
2.In it, each describes specific steps they plan to take to get on the road to economic viability.
其中，每家都描述他们计划在到达经济生存能力的道路上采取的具体步骤。
3.The dilemma is that evolutionary theory says that what is maintained in a lineage is that which ensures the viability of an organism and its offspring.
面临的困境是，进化理论认为同一世系中被继续维持的是那些能确保生物和其后代生存能力的东西。
英文解释
n.
1.(of living things) capable of normal growth and development
2.capable of being done in a practical and useful way
网络释义
viability
稳健性; 财政上可行性; 健全性; 生活力;
seed viability
种子生活力; 幼芽生存能力; 种子成活率,种子生活力;
market viability
街市生意前景; 街市生意潜力; 街市生意潜力 公众衞生;
viability polymorphism
释义：生存力多态性;
financial viability
财务生存能力; 财务可行性; 合乎经济原则; 财务生存能力,财政活力;