existence

存在，实在；生存，生活；存在物，实在物英释nnthe state of existing

1 in existence,现有的；现存的；实际存在的；实有的

2 existence theorem,[计]存在性定理

3 come into existence,成立；开始存在

4 conditions of existence,生存条件

1 Scientists have many theories about how the universe first came into existence (= started to exist )..关于宇宙的起源，科学家有多种理论。