existence
/ɪgˈzɪstəns/noun
mass noun
1- the fact or state of living or having objective reality存在：
the plane was the oldest Boeing remaining in existence
这架飞机是现存最老的一架波音飞机
the need to acknowledge the existence of a problem.
承认存在问题的必要性。
1.1
- continued survival生存：
she helped to keep the company alive when its very existence was threatened.
在公司的生存受到威胁时, 她帮助公司存在了下来。
1.2
- count noun a way of living生活（方式）：
living in a city was more expensive than a rural existence.
城市生活比农村生活的花费大。
1.3
- count noun archaic a being or entity〈古〉存在物; 实体。
词源
late Middle English: from Old French, or from late Latin existentia， from Latin exsistere 'come into being', from ex- 'out'+sistere 'take a stand'.